Blue laser wavelengths are on the shorter end of the visible spectrum. With shorter wavelengths, comes a couple of benefits, such as a smaller minimum spot size, and stronger absorption in materials. The minimum focused spot size of a laser beam is limited by the wavelength. Therefore, the shorter the wavelength the more tightly focused your spot size can be. This can be beneficial for extremely small features, whether in data storage, where the blue or violet beam (Blu-Ray) enables a much higher data density than older technologies (CDs) utilizing a red beam, or for imaging applications or for surface roughness measurements, for example, where the shorter wavelengths enable higher resolutions. Shorter wavelengths also provide stronger absorption in materials. For example, many metals are highly reflective to infrared (IR) wavelengths, while it’s been shown that shorter wavelengths (i.e., blue lasers) are efficiently absorbed into materials such as copper. More on this below.
Sometimes you will see the terms blue lasers and violet lasers used interchangeably. For example, 405 nm lasers are often listed as a blue wavelength, while RPMC defines this wavelength as belonging to the violet color regime. Depending on where you look, you can find slightly different definitions or parameters for what specific wavelength range denotes blue wavelengths and which denote violet, especially right around where these two spectral regions come together. All that really matters is that you choose the proper specific wavelength to match your application requirements.
Blue Laser Diodes
Blue Diode Lasers (blue semiconductor lasers), which are typically fabricated out of aluminum gallium nitride (AlGaN) or aluminum indium gallium nitride (AlInGaN), are one of the newest laser diodes available on the market today, having been first demonstrated in the mid-1990s. Over the past 20 years, blue diode lasers have found uses in a wide variety of applications, most ranging from RGB laser displays to aesthetic lasers for acne treatment. Blue laser light is efficiently absorbed by most metals. Considering this, blue wavelength lasers can be an extremely versatile tool, able to process most materials. High power blue laser diodes provide void-free, spatter-free welds on copper, non-ferrous metals, and dissimilar metals.
Blue DPSS Lasers
In addition to blue diode lasers, diode-pumped solid-state (DPSS) lasers are also available offering extremely long coherence lengths for applications such as Interferometry, Holography, and LIBS. DPSS lasers can produce blue laser light through harmonic generation (3rd harmonic / frequency-tripling) of neodymium-doped yttrium lithium fluoride (Nd:YLF) gain media, for example.
Our Blue Laser Products
We offer many different laser types with Blue output, including Single Emitter and Multi-Emitter Laser Diodes, Laser Diode Modules, Line Modules, Pulsed DPSS Lasers, Microchip Lasers, Tunable DPSS Lasers and Turnkey Systems. Our Blue products are available with up to 3.5 W average power, options for single-mode or multimode, free-space or fiber-coupled output, and various packaging options and integration levels from component to OEM to turnkey systems. We have a number of different blue wavelengths from 415 to 495 nm including non-traditional blue wavelengths like 420, 425, 430, 435, 440, 445, 450, and 460 nm, ideal for various life science applications. If you are looking for 405 nm lasers, you can find them here on our Violet Lasers page.
Deeper Dive into Blue Lasers
Blue Laser Applications
Generally, blue (or sometimes ‘violet’) lasers are useful for many different applications, including flow cytometry, spectroscopic measurements, interferometry, and laser projection (e.g., RGB laser sources). Direct diode laser applications benefit from blue laser applictions, as mentioned earlier (increased data storage density).
Some other blue laser-based application areas:
Non-ferrous metal welding
Gallium Nitride (GaN) Laser Diodes: Green, Blue, and UV Wavelengths
In practice, the material science involved in stably producing laser diode structures with any arbitrary stoichiometry is far more challenging. As stated earlier, for many years it was thought that these challenges would never be overcome, until 1996 when the first AlGaN laser diode was invented by Shuji Nakamura. Nakamura’s work with GaN based semiconductor lasers and LEDs was so revolutionary that he was later awarded the Nobel prize in physics. Over the past 20 years, the technology for making Gallium Nitride (GaN) Laser Diodes has matured into its own branch of optoelectronics. These laser diodes are now available in wavelengths from 375 nm to 521 nm, with output powers exceeding 100 watts.
445nm High-Power Diode Lasers for Micro-Welding Applications
Laser micro-welding takes another step in the evolution of micro-welding technology. Standard laser welding offers many benefits over traditional welding, including providing high-quality welds at complex interfaces with varying thicknesses and geometries. Laser welding, a contact-free process, affords you increased flexibility in the design of your part and the layout of your workstation. Space constraints become less burdensome and more complex geometries and unique welding challenges become more feasible when you don’t need room for bulky and perhaps custom welding heads. OEM type lasers can be easily integrated into laser welding systems with a host of beam delivery options, including mounting to robotic arms for complete process automation. These same benefits apply in 445nm (blue) laser micro-welding, as well as providing void-free, sputter-free welds, advancing the capabilities of this technology even further. For some additional reading on standard laser welding, check out one of our recent articles titled “Blue Diode Lasers Enable High-Quality, Non-Ferrous Metal Welding.”
Blue Diode Lasers Enable High-Quality Non-Ferrous Metal Welding
Blue diode lasers have recently become known as an excellent tool for certain processing techniques regarding copper and other non-ferrous and highly reflective metals. Copper, gold, aluminum, and certain other metals absorb blue wavelengths more easily than any other wavelengths of visible or invisible light. This higher rate of absorption allows for both higher quality results and faster processing times, when typically, there is a trade off between quality and speed.
Utilizing high-power blue diode lasers allows for high-quality, sputter-free welding of complex interfaces, with varying thicknesses and geometries, in copper, various aluminum alloys, and stainless steel, as well as the ability to weld these dissimilar metals together. Because laser welding is a contact-free process, your part design, workstation, and process are afforded increased flexibility. Space constraints become less burdensome and more complex geometries and unique welding challenges become more feasible when you don’t need room for bulky and perhaps custom welding heads.
Just as in traditional particle counting, these lasers must exhibit excellent pointing and power stability, and single-mode, low noise operation (typically free-space output). However, unlike conventional particle counting systems, the wavelengths must be chosen to match the excitation spectra of the available fluorophores. Typical wavelengths include 355nm, 405nm, 473nm, 488nm, 532nm, 553nm, 561nm, 594nm, 640nm and NIR, with output powers in the 25-500mW range. Additionally, since multiple lasers are being integrated into a single system, size, cost, and ease of integration all become significant factors in deciding which laser to choose. Here at RPMC lasers, we offer a unique ultra-compact laser source which is capable of providing a low noise (0.4% typical) single-mode (typical M2 of 1.3) output beam with laser housing dimensions of only 50 mm x 30 mm x 18 mm. These lasers are available from 405 nm to 1064 nm and are capable of producing output powers as high as 500mW.
With over 25 years experience providing Blue lasers to researchers and OEM integrators working in various markets and applications, and 1000s of units fielded, we have the experience to ensure you get the right product for the application. Working with RPMC ensures you are getting trusted advice from our knowledgeable and technical staff on a wide range of laser products. RPMC and our manufacturers are willing and able to provide custom solutions for your unique application.
If you have any questions, or if you would like some assistance please Contact Us here. Furthermore, you can email us at [email protected]to talk to a knowledgeable Product Manager.
Alternatively, use the filters on this page to assist in narrowing down the selection of Blue lasers for sale. Finally, head to our Knowledge Center with our Lasers 101 page and Blogs, Whitepapers, and FAQ pages for further, in-depth reading.
Check out our Online Store: This page contains In-Stock products and an ever-changing assortment of various types of new lasers at marked-down/discount prices.
The Matchbox series offers excellent performance and reliability in the “World’s Smallest” ultra-compact, all-in-one, integrated laser head. They can operate on a 5V power supply while maintaining low noise operation. The monolithic design of the Matchbox Series laser includes thermally stabilized optics in a hermetically sealed housing, ensuring reliable and maintenance-free operation. This series is available in wavelengths from 405 nm thru 1064nm, with options for collimated beam or fiber-coupled output, and single-mode and multimode versions.
The LaserBoxx Low Noise series of CW diode laser modules & DPSS lasers offer wavelengths from 375 to 785nm, output powers up to 500 mW, and OEM & plug-&-play modules. These rugged, compact & highly customizable lasers also offer excellent beam quality & stability, modulation capabilities, ultra-low noise output & options for SM, MM, and PM fiber coupling. Our dedicated control software, USB and RS232 interfaces, and external controller with power display make integration, operation, and remote diagnostics a breeze.
The LaserBoxx HPE Series is a highly versatile and customizable laser diode module series that offers superior performance and reliability in a compact, driver-integrated laser head. With a wide range of wavelengths from the UV to the NIR, this series provides high-power output, removable MM fiber coupling options & dedicated control software with USB and RS232 interfaces, as well as an external controller with power display, ensuring easy integration and precise power and modulation control.
The LDX Series of made-in-the-US, high-power, multimode laser diodes provide wavelengths from 400nm – 1900nm, a wide range of output powers and package types, as well as completely customized solutions. We have been offering these high-quality laser diodes for over 25 years. The performance, reliability, and lifetimes are time tested, and if for some reason there is an issue, we will make it right.
The Q-TUNE series is a highly efficient, tunable wavelength laser designed for researchers working with temporally resolved spectroscopy, metrology, photo-acoustic imaging, and remote sensing applications. This laser uses an optical parametric oscillator (OPO) to produce a tunable wavelength range of 410-2300 nm with a linewidth narrower than 6 cm-1, which can be extended to 210-410 nm with an optional second harmonic generator. With a pulse duration shorter than 5ns and an upper repetition rate of 100Hz, the Q-TUNE series provides a perfect coherent light source for precise scientific measurements.
The Q-SHIFT series of Q-switched DPSS lasers is designed for researchers and application specialists working in micromachining, dermatology, LIDAR, time-resolved laser spectroscopy, and LIBS applications. With its built-in nonlinear wavelength conversion stage, this series allows the production of unconventional fundamental DPSS wavelengths, including 1163, 1177, 1300, 1317, 1551 and 1571 nm options, making it an ideal choice for those seeking wavelengths that are not accessible with conventional solid-state laser sources. With the optional harmonics generator, it is possible to generate up to the 4th harmonic for each fundamental wavelength, providing even more versatility.
The RHAML series of diode laser modules deliver a uniform, stable output beam that crucual for machine vision applcations, especially in 3D vision systems. The compact, RHAML series is a reliable light source that incoroporates a fucusing lens that can be easily adjusted by the user. Additionally, the RHAML series is fully IP67 compliant, making it an ideal solution for use in harsh environmental conditions and production/industrial facilities.
The RML series of laser diode modules are available with single mode fiber outputs with a set wavelength from 405nm – 2500nm. The compact RML series is available with up to 80mW of output power in a package measuring 15mm in diameter and 40mm in length (without connector) . As an option these modules are offered with a potentiometer for power adjustment, external TTL modulation up to 1MHz and analog modulation up to 100kHz.
The RPK Series of multiple, single-emitter fiber-coupled diode lasers are available in wavelengths from 405nm thru 1550nm with up to ≈ 500W output power. Our specialized fiber-coupling techniques ensure high efficiency, stability, and superior beam quality, while rigorous inspections and burn-in procedures guarantee each product’s reliability, stability, and long lifetime. Highly customizable packages allow us to meet our customers’ specific needs, providing high-quality products at reasonable prices.
The RPKBDL Series is a high-power direct diode turn-key system available in wavelengths of 445nm, 915nm, or 976nm, providing up to 3kW of power and unprecedented brightness. Its pluggable design makes maintenance easy, avoiding troubles and high time costs caused by return-to-factory maintenance. The RPKBDL series results from continuous innovation, ensuring high technical strength and product quality. This highly customizable system allows us to meet our customers’ specific needs, providing high-quality products at reasonable prices.
The RWLD series offers competitively priced laser diodes with high beam quality and a wide variety of products to support multiple applications. Available in a wide range of wavelengths, power levels, and packages. The RWLD wavelength options span from 405nm to 1650nm, with output powers in the range of 10 mW to 300 mW, packaged in a TO-18 package with photodiode. We also offer customized options, such as a customized wavelength, output power, or a special package to meet your specific needs.
The RWLP series offers an affordable and versatile solution for your laser application needs with single-mode and multimode options and wavelengths from 405nm thru the IR region. With customizable options, our team can work with you to solve any challenges you may face. Rigorously tested for long-term reliability, the RWLP series ensures consistent performance and high beam quality. Perfect for integration, this series supports multiple applications including biological and analytical instrumentation.
The Microchip series is a line of ultra-compact, single longitudinal mode (SLM), narrow linewidth, passive q-switch, ns/ps pulsed DPSS lasers. Offering exceptional performance and versatility in a compact form factor, every model is 1:1 interchangeable, regardless of wavelength. The lasers feature pulse widths from 400 ps to 2 ns, pulse energy up to 80 µJ, and repetition rates up to 100 kHz. Available in wavelengths from the UV to the NIR, this series is designed for LIDAR, 3D scanning, LIBS, night vision, and more.
The TG Series of laser diodes emit in the blue spectral range with non-standard wavelengths from 418 nm up to 466 nm, perfect for Life Science applications, with a typical output power of 50mW and an absolute maximum output power of 100mW. Assembled in a 5.6 mm (TO-56) packages the TG series is a suitable for a wide range of OEM applications that require blue/violet light, including ECDL with low AR coating option.
The RWLS series of RGB White Laser Diodes offers customizable, versatile, and reliable solution for your laser applications. Available in a wide range of power levels, with three base wavelengths: 635 nm (Red), 520nm (Green), and 445nm (Blue), the RWLS series can be tailored to your exact specifications. Typically packaged in a pigtailed HHL configuration, with built-in TEC, there are also plenty of customization options including wavelength, power, and packaging.