LDX-IR-FC

Fiber-Coupled Near-Infrared Multimode Laser Diodes, 750–1400nm, up to 12.8W

Key Features:

750–1400nm near-infrared wavelength range
Up to 12.8W fiber-coupled output, depending on configuration
Broad selection including 808, 915, 940, 980 & 1064nm
Fiber core sizes matched to diode emitter requirements
Detachable or pigtailed fiber package options
TEC, photodiode, thermistor & isolation options

Need help configuring an LDX-IR-FC diode? Share your target wavelength, required fiber-delivered power, fiber core or NA requirements, connector or termination preference, package constraints, thermal-control needs, and production quantity.

RPMC can help determine whether a standard fiber-coupled configuration, modified package, or custom LDX solution is the right starting point.

Popular configurations are shown below as starting points. Available wavelength, output power, emitter size, fiber, package, and options vary by configuration. Delivered fiber output depends on the selected diode and complete fiber-coupled configuration. RPMC can help confirm the expected output for the complete part number.

LDX-IR-FC: Fiber coupled Infrared Multimode Laser Diode

POPULAR CONFIGURATIONS:

Part Number	Part Description
LDX-3105-750-FC	Laser Diode, Multimode, 750+/-5 nm, 1200mW, 50um emitter	Get Quote
LDX-3110-750-FC	Laser Diode, Multimode, 750+/-5 nm, 1500mW, 100um emitter	Get Quote
LDX-3210-750-FC	Laser Diode, Multimode, 750+/-5 nm, 2000mW, 100um emitter	Get Quote
LDX-3315-750-FC	Laser Diode, Multimode, 750+/-5 nm, 3000mW, 150um emitter	Get Quote
LDX-3530-750-FC	Laser Diode, Multimode, 750+/-5 nm, 5000mW, 300um emitter	Get Quote
LDX-3105-760-FC	Laser Diode, Multimode, 760+/-5 nm, 1200mW, 50um emitter	Get Quote
LDX-3210-760-FC	Laser Diode, Multimode, 760+/-5 nm, 2000mW, 100um emitter	Get Quote
LDX-3315-760-FC	Laser Diode, Multimode, 760+/-5 nm, 3000mW, 150um emitter	Get Quote
LDX-3420-760-FC	Laser Diode, Multimode, 760+/-5 nm, 4000mW, 200um emitter	Get Quote
LDX-3630-760-FC	Laser Diode, Multimode, 760+/-5 nm, 6000mW, 300um emitter	Get Quote
LDX-3315-775-FC	Laser Diode, Multimode, 775+/-3 nm, 3000mW, 150um emitter	Get Quote
LDX-3105-780-FC	Laser Diode, Multimode, 780+/-3 nm, 1200mW, 50um emitter	Get Quote
LDX-3310-780-FC	Laser Diode, Multimode, 780+/-3 nm, 2500mW, 100um emitter	Get Quote
LDX-3315-780-FC	Laser Diode, Multimode, 780+/-3 nm, 3500mW, 150um emitter	Get Quote
LDX-3520-780-FC	Laser Diode, Multimode, 780+/-3 nm, 5000mW, 200um emitter	Get Quote
LDX-3315-785-FC	Laser Diode, Multimode, 785+/-3 nm, 3500mW, 150um emitter	Get Quote
LDX-3520-785-FC	Laser Diode, Multimode, 785+/-3 nm, 5000mW, 200um emitter	Get Quote
LDX-3105-792-FC	Laser Diode, Multimode, 792+/-3 nm, 1200mW, 50um emitter	Get Quote
LDX-3310-792-FC	Laser Diode, Multimode, 792+/-3 nm, 3000mW, 100um emitter	Get Quote
LDX-3415-792-FC	Laser Diode, Multimode, 792+/-3 nm, 4000mW, 150um emitter	Get Quote
LDX-3820-792-FC	Laser Diode, Multimode, 792+/-5 nm, 8000mW, 200um emitter	Get Quote
LDX-3310-797-FC	Laser Diode, Multimode, 797+/-3 nm, 3000mW, 100um emitter	Get Quote
LDX-3415-797-FC	Laser Diode, Multimode, 797+/-3 nm, 4000mW, 150um emitter	Get Quote
LDX-3520-797-FC	Laser Diode, Multimode, 797+/-3 nm, 5000mW, 200um emitter	Get Quote
LDX-3105-808-FC	Laser Diode, Multimode, 808+/-3 nm, 1200mW, 50um emitter	Get Quote
LDX-3210-808-FC	Laser Diode, Multimode, 808+/-3 nm, 2000mW, 100um emitter	Get Quote
LDX-3310-808-FC	Laser Diode, Multimode, 808+/-3 nm, 3000mW, 100um emitter	Get Quote
LDX-3410-808-FC	Laser Diode, Multimode, 808+/-3 nm, 4000mW, 100um emitter	Get Quote
LDX-3415-808-FC	Laser Diode, Multimode, 808+/-3 nm, 4000mW, 150um emitter	Get Quote
LDX-3610-808-FC	Laser Diode, Multimode, 808+/-3 nm, 6000mW, 100um emitter	Get Quote
LDX-3620-808-FC	Laser Diode, Multimode, 808+/-3 nm, 6000mW, 200um emitter	Get Quote
LDX-3A20-808-FC	Laser Diode, Multimode, 808+/-5 nm, 10000mW, 200um emitter	Get Quote
LDX-3415-825-FC	Laser Diode, Multimode, 825+/-5 nm, 4000mW, 150um emitter	Get Quote
LDX-3210-835-FC	Laser Diode, Multimode, 835+/-5 nm, 2000mW, 100um emitter	Get Quote
LDX-3610-835-FC	Laser Diode, Multimode, 835+/-5 nm, 6000mW, 100um emitter	Get Quote
LDX-3103-860-FC	Laser Diode, Multimode, 860+/-10 nm, 1000mW, 30um emitter	Get Quote
LDX-3105-860-FC	Laser Diode, Multimode, 860+/-10 nm, 1200mW, 50um emitter	Get Quote
LDX-3210-860-FC	Laser Diode, Multimode, 860+/-10 nm, 2000mW, 100um emitter	Get Quote
LDX-3310-860-FC	Laser Diode, Multimode, 860+/-10 nm, 2500mW, 100um emitter	Get Quote
LDX-3415-860-FC	Laser Diode, Multimode, 860+/-10 nm, 3500mW, 150um emitter	Get Quote
LDX-3520-860-FC	Laser Diode, Multimode, 860+/-10 nm, 5000mW, 200um emitter	Get Quote
LDX-3415-870-FC	Laser Diode, Multimode, 870+/-5 nm, 4000mW, 150um emitter	Get Quote
LDX-3210-880-FC	Laser Diode, Multimode, 880+/-10 nm, 2500mW, 100um emitter	Get Quote
LDX-3415-880-FC	Laser Diode, Multimode, 880+/-10 nm, 4000mW, 150um emitter	Get Quote
LDX-3620-880-FC	Laser Diode, Multimode, 880+/-10 nm, 6000mW, 200um emitter	Get Quote
LDX-3210-905-FC	Laser Diode, Multimode, 905+/-5 nm, 2500mW, 100um emitter	Get Quote
LDX-3410-915-FC	Laser Diode, Multimode, 915+/-10 nm, 4000mW, 100um emitter	Get Quote
LDX-3615-915-FC	Laser Diode, Multimode, 915+/-10 nm, 6000mW, 150um emitter	Get Quote
LDX-3A10-915-FC	Laser Diode, Multimode, 915+/-10 nm, 10000mW, 100um emitter	Get Quote
LDX-3410-940-FC	Laser Diode, Multimode, 940+/-10 nm, 4000mW, 100um emitter	Get Quote
LDX-3615-940-FC	Laser Diode, Multimode, 940+/-10 nm, 6000mW, 150um emitter	Get Quote
LDX-3810-940-FC	Laser Diode, Multimode, 940+/-10 nm, 8000mW, 100um emitter	Get Quote
LDX-3F20-940-FC	Laser Diode, Multimode, 940+/-10 nm, 16000mW, 200um emitter	Get Quote
LDX-3A10-960-FC	Laser Diode, Multimode, 960+/-10 nm, 10000mW, 100um emitter	Get Quote
LDX-3105-980-FC	Laser Diode, Multimode, 980+/-10 nm, 1500mW, 50um emitter	Get Quote
LDX-3410-980-FC	Laser Diode, Multimode, 980+/-10 nm, 4000mW, 100um emitter	Get Quote
LDX-3615-980-FC	Laser Diode, Multimode, 980+/-10 nm, 6000mW, 150um emitter	Get Quote
LDX-3A10-980-FC	Laser Diode, Multimode, 980+/-10 nm, 10000mW, 100um emitter	Get Quote
LDX-3610-995-FC	Laser Diode, Multimode, 995+/-5 nm, 6000mW, 100um emitter	Get Quote
LDX-3C20-1015-FC	Laser Diode, Multimode, 1015+/-5 nm, 12000mW, 200um emitter	Get Quote
LDX-3310-1030-FC	Laser Diode, Multimode, 1030+/-10 nm, 3000mW, 100um emitter	Get Quote
LDX-3520-1030-FC	Laser Diode, Multimode, 1030+/-10 nm, 5000mW, 200um emitter	Get Quote
LDX-3C20-1030-FC	Laser Diode, Multimode, 1030+/-5 nm, 12000mW, 200um emitter	Get Quote
LDX-3105-1064-FC	Laser Diode, Multimode, 1064+/-10 nm, 1500mW, 50um emitter	Get Quote
LDX-3410-1064-FC	Laser Diode, Multimode, 1064+/-10 nm, 4000mW, 100um emitter	Get Quote
LDX-3515-1064-FC	Laser Diode, Multimode, 1064+/-10 nm, 5000mW, 150um emitter	Get Quote
LDX-3A10-1064-FC	Laser Diode, Multimode, 1064+/-10 nm, 10000mW, 100um emitter	Get Quote
LDX-3C20-1064-FC	Laser Diode, Multimode, 1064+/-5 nm, 12000mW, 200um emitter	Get Quote
LDX-3205-1130-FC	Laser Diode, Multimode, 1130+/-20 nm, 2000mW, 50um emitter	Get Quote
LDX-3310-1130-FC	Laser Diode, Multimode, 1130+/-20 nm, 3500mW, 100um emitter	Get Quote
LDX-3515-1130-FC	Laser Diode, Multimode, 1130+/-20 nm, 5000mW, 150um emitter	Get Quote
LDX-3105-1210-FC	Laser Diode, Multimode, 1210+/-20 nm, 1500mW, 50um emitter	Get Quote
LDX-3210-1210-FC	Laser Diode, Multimode, 1210+/-20 nm, 2000mW, 100um emitter	Get Quote
LDX-3718-1280-FC	Laser Diode, Multimode, 1280+/-20 nm, 7000mW, 180um emitter	Get Quote
LDX-3410-1310-FC	Laser Diode, Multimode, 1310+/-20 nm, 4000mW, 100um emitter	Get Quote
LDX-3310-1370-FC	Laser Diode, Multimode, 1370+/-20 nm, 3500mW, 100um emitter	Get Quote
LDX-3510-1370-FC	Laser Diode, Multimode, 1370+/-20 nm, 5000mW, 100um emitter	Get Quote

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Overview:
Specifications:
Part No. Configurator:
Datasheets/Downloads:
Applications:
Videos:

About the LDX-IR-FC Fiber-Coupled Infrared Laser Diode Family

The LDX-IR-FC family combines high-power multimode near-infrared laser diodes with fiber delivery for systems that need flexible optical routing, remote output delivery, or simplified integration. Current standard configurations span 750–1400 nm, with fiber-coupled output up to 12.8 W depending on wavelength, emitter, fiber, and package configuration.

The family includes many commonly used NIR wavelengths, including 808, 915, 940, 980, and 1064 nm, along with additional wavelengths extending through 1370 nm in the current standard portfolio. Start with the required wavelength and delivered optical power, then define the fiber interface, package, thermal management, monitoring, and system-integration requirements.

When Should I Choose the Fiber-Coupled Version?

Start with LDX-IR-FC when the application benefits from carrying the NIR output through fiber to the point of use. Fiber delivery can simplify routing between the diode and downstream optics, separate the laser package from the optical interface, and reduce free-space alignment inside the system.

If direct access to the emitted beam is more important for external collimation, focusing, pumping, beam shaping, or other free-space optics, compare the LDX-IR-FS free-space infrared laser diode family instead.

Configure an LDX-IR-FC Part Number

Use the configurator below to narrow the available wavelength, laser chip, fiber-coupled package, and package-option combinations. The resulting part number can be referenced when requesting a quote.

Reference the configured part number in your quote request so RPMC can quickly identify the intended configuration.

Fiber Delivery & Package Options

The fiber interface is part of the laser configuration, not simply an accessory added afterward. Package type affects fiber attachment, thermal management, monitoring, mechanical integration, and whether the fiber is detachable or permanently pigtailed.

If the configurator or popular configurations do not show an exact match, send RPMC the wavelength, delivered power, fiber core and NA, termination, package, environmental, and integration requirements you already know. We can help determine whether another standard configuration or a customized LDX diode is appropriate.

Fiber-Coupled Package Types

Click a package image to view its available technical drawing.

9mm SMA FC Package	8-Pin BFC Package	2-Pin FCP Package	HHL-FC Package

Industry-standard hermetically sealed package SMA connector for detachable fiber Header material – Copper Optional Photodiode or Isolated package	Hermetically sealed package Built-in internal TEC and Photodiode Fiber pigtail with SMA connector Header material – Copper Optional Thermistor	Hermetically sealed package Fiber pigtail with SMA connector Header material – Copper	Hermetically sealed package Fiber pigtail with SMA connector Internal peltier cooler (TEC) Internal thermistor and photodiode Header material – Copper

Emitter & Fiber Core Selection

Fiber core size is selected together with the diode emitter rather than independently. The combination affects coupling efficiency, delivered brightness, alignment tolerance, and how the fiber output interfaces with the downstream optics. LDX supports multiple emitter-to-fiber combinations, with core sizes generally ranging from approximately 105–365 µm depending on the diode and configuration.

Numerical aperture matters too. A configuration that meets the wavelength and power requirement may still be a poor system fit if the fiber core, NA, or output geometry does not match the receiving optics, pump architecture, or application.

Emitter Size	Fiber size
≤ 80um Emitter	105um Fiber
100um Emitter	105um or 200um Fiber
150um Emitter	200um Fiber
200um Emitter	200um or 365um Fiber
300um Emitter	365um Fiber

Why Choose LDX for a Fiber-Coupled Infrared Laser Diode?

Broad NIR wavelength selection: standard configurations cover many commonly required wavelengths from 750–1400 nm, including 808, 915, 940, 980, 1064, and additional longer-wavelength NIR options.
Higher fiber-delivered power: selected configurations provide up to 12.8 W fiber-coupled output, supporting applications that require substantially more power than the visible fiber-coupled family.
Emitter-to-fiber matching: multiple emitter and fiber-core combinations allow the configuration to balance delivered power, brightness, coupling efficiency, and downstream optical requirements.
Flexible optical delivery: detachable-fiber and pigtailed packages allow the diode and point of use to be separated, simplifying optical routing in many OEM, pump, sensing, and illumination systems.
Integrated thermal and monitoring options: selected packages can incorporate TECs, thermistors, photodiodes, and electrical isolation for system-level control and integration.
Configuration beyond the standard catalog: wavelength, emitter, fiber, package, thermal-control, monitoring, and other requirements can be evaluated when a standard combination does not fit.
US-based manufacturing: LDX designs, packages, tests, and characterizes its multimode laser diodes at its Tennessee facility.

Need Help Finalizing an LDX-IR-FC Configuration?

Send RPMC the wavelength, required fiber-delivered power, fiber core or NA, connector or termination, package, thermal, environmental, and quantity requirements you already know. We can help determine which standard or custom LDX fiber-coupled infrared configuration is the best starting point.

View All LDX Optronics Laser Diode Families

Wavelength (nm)	1015, 750, 780, 797, 808, 830, 860, 915, 940, 980, 1064, 1130, 1210, 1280, 1370
Description	Laser Diode, Multimode, Fiber-Coupled, Near-Infrared, 750–1400nm, up to 12.8W
Type	Single Emitter, Fiber-Coupled, Made in the USA, Customizable

LDX-Catalog-2026

LDX-Tech-Notes-2026

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LDX-IR-FS: Free Space Infrared Multimode Laser Diode
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Laser Diode Blog Posts

Components White Papers

Component FAQs

Can I operate multiple laser diodes from the same power supply?

Can I operate multiple laser diodes from the same power supply?

The same power supply can drive multiple laser diodes if they are connected in series, but they must never be connected in parallel. When two diodes are connected in series, they will function properly as long as the compliance voltage is large enough to cover the voltage drop across each diode. For example, suppose you are trying to power two diode lasers, each with an operating voltage of 1.9 V, and connect the two in series. In that case, the pulsed or CW laser driver must have a total voltage capacity greater than 3.8 V. This configuration works because diodes share the same current when connected in series. In contrast, when two diodes are connected in parallel, the current is no longer shared between the two diodes. Get more details on the topic in this article: “Can I Operate Multiple Laser Diodes From the Same Power Supply?” Get more information from our Lasers 101, Blogs, Whitepapers, FAQs, and Press Release pages in our Knowledge Center!

Can laser diodes emit green, blue, or UV light?

Can laser diodes emit green, blue, or UV light?

The output wavelength of a semiconductor laser is based on the difference in energy between the valance and conduction bands of the material (bandgap energy). Since the energy of a photon is inversely proportional to its wavelength, this means that a larger bandgap energy will result in a shorter emission wavelength. Due to the relatively wide bandgap energy of 3.4 eV, gallium nitride (GaN) is ideal for the production of semiconductor optoelectronic devices, producing blue wavelength light without the need for nonlinear crystal harmonic generation. Since the mid-’90s, GaN substrates have been the common material utilized for blue LEDs. In recent years, GaN based laser technology has provided blue, green and UV laser diodes, now available in wavelengths from 375 nm to 521 nm, with output powers exceeding 100 watts. Read our article, titled “Gallium Nitride (GaN) Laser Diodes: Green, Blue, and UV Wavelengths” to learn more about GaN Based Laser Diodes, available through RPMC. Get more information from our Lasers 101, Blogs, Whitepapers, and FAQs pages in our Knowledge Center!

How long will a laser diode last?

How long will a laser diode last?

Honestly, it depends on several factors, and there is no simple chart to cover everything. Typical diode lifetimes are in the range of 25,000 to 50,000 hours. Though, there are lifetime ratings outside this range, depending on the configuration. Furthermore, there are a wide range of degradation sources that contribute to a shorter lifespan of laser diodes. These degradation sources include dislocations that affect the inner region, metal diffusion and alloy reactions that affect the electrode, solder instability (reaction and migration) that affect the bonding parts, separation of metals in the heatsink bond, and defects in buried heterostructure devices. Read more about diode lifetime and contributing factors in this article: “Understanding Laser Diode Lifetime.” Get more information from our Lasers 101, Blogs, Whitepapers, FAQs, and Press Release pages in our Knowledge Center!

What factors affect the lifetime of laser diodes?

What factors affect the lifetime of laser diodes?

There are a great many factors that can increase or decrease the lifetime of a laser diode. One of the main considerations is thermal management. Mounting or heatsinking of the package is of tremendous importance because operating temperature strongly influences lifetime and performance. Other factors to consider include electrostatic discharge (ESD), voltage and current spikes, back reflections, flammable materials, noxious substances, outgassing materials (even thermal compounds), electrical connections, soldering method and fumes, and environmental considerations including ambient temperature, and contamination from humidity and dust. Read more about these critical considerations and contributing factors in this article: “How to Improve Laser Diode Lifetime: Advice and Precautions on Mounting.” Get more information from our Lasers 101, Blogs, Whitepapers, FAQs, and Press Release pages in our Knowledge Center!

What is a laser diode?

What is a laser diode?

A Laser Diode or semiconductor laser is the simplest form of Solid-State Laser. Laser diodes are commonly referred to as edge emitting laser diodes because the laser light is emitted from the edge of the substrate. The light emitting region of the laser diode is commonly called the emitter. The emitter size and the number of emitters determine output power and beam quality of a laser diode. Electrically speaking, a laser diode is a PIN diode. The intrinsic (I) region is the active region of the laser diode. The N and P regions provide the active region with the carriers (electrons and holes). Initially, research on laser diodes was carried out using P-N diodes. However, all modern laser diodes utilize the double-hetero-structure implementation. This design confines the carriers and photons, allowing a maximization of recombination and light generation. If you want to start reading more about laser diodes, try this whitepaper “How to Improve Laser Diode Lifetime.” If you want to read more about the Laser Diode Types we offer, check out the Overview of Laser Diodes section on our Lasers 101 Page!

What is the difference between laser diodes and VCSELs?

What is the difference between laser diodes and VCSELs?

Laser Diodes and VCSELs are semiconductor lasers, the simplest form of Solid State Lasers. Laser diodes are commonly referred to as edge emitting laser diodes because the laser light is emitted from the edge of the substrate. The light emitting region of the laser diode is commonly called the emitter. The emitter size and the quantity of emitters determine output power and beam quality of a laser diode. These Fabry Perot Diode Lasers with a single emission region (Emitter) are typically called laser diode chips, while a linear array of emitters is called laser diode bars. Laser diode bars typically use multimode emitters, the number of emitters per substrate can vary from 5 emitters to 100 emitters. VCSELs (Vertical Cavity Surface Emitting Laser) emit light perpendicular to the mounting surface as opposed to parallel like edge emitting laser diodes. VCSELs offer a uniform spatial illumination in a circular illumination pattern with low speckle. If you want to read more about lasers in general, and help narrowing down the selection to find the right laser for you, check out our Knowledge Center for our Blogs, Whitepapers, and FAQ pages, as well as our Lasers 101 Page! VCSEL

What’s the difference between single transverse mode & single longitudinal mode?

What’s the difference between single transverse mode & single longitudinal mode?

Within the laser community, one of the most overused and often miscommunicated terms is the phrase “single mode.” This is because a laser beam when traveling through air takes up a three-dimensional volume in space similar to that of a cylinder; and just as with a cylinder, a laser beam can be divided into independent coordinates each with their own mode structure. For a cylinder we would call these the length and the cross-section, but as shown in the figure below for a laser beam, we define these as the transverse electromagnetic (TEM) plane and the longitudinal axis. Both sets of modes are fundamental to the laser beam’s properties, since the TEM modes determine the spatial distribution of the laser beams intensity, and the longitudinal modes determine the spectral properties of the laser. As a result, when a laser is described as being “single-mode” first you need to make sure that you truly understand which mode is being referred to. Meaning that you must know if the laser is single transverse mode, single longitudinal mode, or both. Get all the information you need in this article: “What is Single Longitudinal Mode?” Get more information from our Lasers 101, Blogs, Whitepapers, FAQs, and Press Release pages in our Knowledge Center!