UV lasers offer extremely high photon energy, which opens up a wide range of applications that visible and infrared laser sources can’t address. The most common UV laser sources are the third and fourth harmonics on Nd: YAG, providing 355 nm and 266 nm wavelengths, respectively. It’s important to point out that while 355 nm and 266 nm are the most common UV laser wavelengths, several other Nd: YAG lines can be frequency doubled and tripled, producing a large selection of alternate UV wavelengths. To achieve these higher-order harmonics, the electric field density of the laser must be extremely high. As a result, these lasers are primarily available with q-switching capability. Continuous-wave (CW) UV laser diodes are also available at 375 nm, with single-mode and multi-mode beam profiles and free-space or fiber-coupled outputs.
Our UV Laser Products
We offer many different laser types with UV output, including Single Emitter Laser Diodes, Laser Diode Modules, CW DPSS Lasers, Pulsed DPSS Lasers, Microchip Lasers, MIL-Spec Lasers, and Micromachining Systems. Our UV products are available with up to 20 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.
There are many different flow cytometry based applications. With multiple wavelengths at your disposal, allowing such diverse combinations as mentioned above, all of these applications are made more accessible. Some of these applications include cell sorting, immune cell phenotyping (immunophenotyping), immune cell function analysis, intracellular cytokine staining analysis, receptor occupancy analysis, gene therapy, cell cycle analysis, cell proliferation, membrane potential, live/dead bacteria discrimination, tumor suppressor gene/protein expression, antigen-specific cell responses, and many others.
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.
Gallium Nitride (GaN) Laser Diodes: Green, Blue, and UV Wavelengths
Semiconductor devices can be engineered to have a specific bandgap energy by combining various elements to form binary, ternary, and quaternary alloys. These semiconductors can have their bandgap further tailored, varying the stoichiometry in ternary and quaternary semiconductors. In our specific case, visible laser diodes can be produced from a combination of nitride materials, such as aluminum nitride (AlN), GaN, and indium nitride (InN), creating AlGaN and InGaN laser diodes for example. The resultant alloy, typically referred to as simply ‘GaN’ in shorthand, can theoretically be combined using the following formulas AlxGa1−xN and AlxInyGa1−x-yN to form any bandgap which falls within the “banana,” shown in the figure below.
The Green, Blue & UV Laser Diode Revolution
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…
High-Energy Q-Switched Lasers for Harmonic Generation – Part 1
We have previously discussed the physics behind harmonic generation. The most important thing to take away from these discussions is that as a general rule of thumb, there are two ways to increase the efficiency of harmonic generation: increasing the peak power and decreasing the spot size. Since the Quantas-Q2HE has a bell-shaped beam profile, with a greater than 75% Gaussian fit on top of the extremely high peak power discussed previously, it is not only useful for second harmonic generation but third, fourth and fifth harmonic generation as well. As a result, the Q2HE can produce ultraviolet laser wavelengths as low as 211 nm. The Quantas-Q2HE is available in seven different configurations, all of which can generate fifth harmonic light, as shown in the table below…
Surprisingly this resonator geometry allows for the generation of short pulse width (sub-nanosecond) laser with high peak powers often greater than tens of kilowatts. This makes these lasers ideal for both external and intracavity harmonic generation. External cavity second harmonic generation was first achieved in 1996 by bonding a thin KTP crystal, that is coated to be highly reflective at 1064 nm and anti-reflective at 532nm, and then bonded to the front of a Nd:YVO4 microchip laser. Within two years, third and fourth harmonic microchip lasers were also demonstrated using an external crystal to produce 355nm and 266nm Ultraviolet lasers. In order to fully understand why these lasers are ideal for harmonic generation, it is important to review the fundamental physics underlying this nonlinear proces
How Can We Help?
With over 25 years experience providing Ultraviolet 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.
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The Skylark series of ultrareliable, high performance, CW single-frequency lasers are available at a variety of wavelengths with high average powers, making them well suited for a variety of highly specialized scientific and industrial applications. BRaMMS Technology® enables superior performance, high output powers, and outstanding beam properties in an overall compact footprint. The Skylark series of lasers are utilized in a range of applications including holography, metrology, spectroscopy, and quantum technology.
The Aero Series is a high-energy DPSS laser that operates at less than 15 nanoseconds with multiple wavelength options including 266, 355, 532, and 1064nm.This seriesprovides unparalleled precision and accuracy in even the most challenging environments. All models come enclosed in an extremely compact and ruggedized single unit with a conductively cooled heatsink with a water-cooled option. It comes with available options for beam expanding and collimating optics. This laser series is ideal for applications like LIBS, spectroscopy, and Atmospheric LIDAR.
The CEUV series is a commercial line of compact and efficient DPSS laser sources, capable of operating over a wide range of pulsing conditions (duty-cycle and PRF), in a low SWaP package, with average power up to ≈5W @ 266nm, 10W @ 355nm or 532nm, 20W @ 1064nm. This series of DPSS lasers provides a combination of compact, efficient, and high-power performance in a rugged design suitable for harsh environments and airborne applications. The design has been tested in brassboard hardware and a prototype is being developed.
The HL Series offers versatile and high-quality laser diode products in a variety of wavelengths and high-power options,ideal for direct imaging, industrial, and bio/medical applications. These reliable, efficient, and compact diodes come in TO-Can packages, making them perfect for OEM integration. Additionally, they operate with TE mode oscillation and are RoHS compliant, ensuring safe use. Choose the HL Series for quality, reliability, and performance in laser diodes.
The LaserBoxx HPE Series is a highly versatile and customizablelaser 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 offers high-power laser diode modules that are perfect for a variety of applications. The LaserBoxx HPE series also includes removable multimode fiber coupling options and 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 LaserBoxx Low Noise series of CW diode laser modules, with a variety of wavelengths from 375 to 785nm and output powers up to 350mW,offers highly customizable laser solutions for OEM and plug & play modules. With advanced features such as excellent beam quality, stability, and modulation capabilities, our lasers provide ultra-low noise and a wide range of 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. Additionally, our rugged and compact design and wide variety of standard wavelengths ensure that our lasers can meet your specific needs.
The Onda series is a DPSS nanosecond OEM laser platform designed for high-end applications requiring excellent beam quality and high peak power in materials such as metals, glass, plastics, and various delicate and hard materials. This compact and easy to use laser series is available in wavelengths of 266, 355, 532, and 1064nm, with an extended operating temperature range and superior performance to cost ratio. The Onda series’ internal optical layout and accurate temperature management enable high output energies without compromising the lifetime of the THG and FHG stages.
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 Q-SPARK series is an air-cooled, diode-pumped, Q-switched laser designed for researchers and application specialists working with ablation, LIDAR, remote sensing, and LIBS applications. The laser produces sub-nanosecond or nanosecond pulses with peak power up to 20 MW and pulse energies up to 10 mJ, making it ideal for a wide range of applications. With a short <1.5 ns pulse, compact air-cooled package, and innovative water-free laser crystal end-pumping technology, the Q-SPARK series delivers high-quality, low divergence, Gaussian-like laser beams.
The Q1 series is a compact, energy-efficient, diode pumped, air-cooled, Q-switched laser available at 1064 and 1053nm with up to 45 mJ of pulse energy and rep rates up to 50Hz. The high peak powers and low divergence of the Q1 series enable efficient harmonic conversion through the 5th harmonic (213 or 211nm). The innovative design results in a user-friendly, turnkey system that requires little maintenance, and the laser’s variable pulse repetition rate and built-in sync pulse generator provide flexibility for triggering user equipment.
The Q2 series is a diode-pumped, fully air-cooled, Q-switched laser designed for a wide range of applications that require high peak power pulses. Its innovative water-free laser crystal end-pumping technology produces Gaussian-like, low divergence laser beams with high peak powers, allowing for efficient harmonics conversion through the 5th harmonic. This versatile platform can be configured in many ways, including up to 80mJ pulse energy at 10 Hz pulse repetition rate or up to 20mJ at 100 Hz. The laser can emit either 1053 nm or 1064 nm wavelength, and in the short cavity configuration, pulse duration can be reduced by 50% in comparison to standard configuration.
The Q2HE series is a high–energy, q-switched, diode-pumped solid-state (DPSS) laser series, available in either 1053nm or 1064nm fundamental wavelengths, with optional 2nd, 3rd, 4th, or 5th harmonic generation. This air-cooled series of lasers is designed for a wide range of applications that require high peak power pulses. Due to a short laser cavity, excellent thermal properties of the crystal, and an innovative water-free crystal cooling technology, the Q2HE series can deliver up to 120mJ of pulse energy and/or up to 4W average output power. This advanced laser design results in a compact, user-friendly turnkey system that requires little maintenance.
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, passively q-switched, single longitudinal mode (SLM), narrow linewidth, DPSS lasers that offer exceptional performance in a compact form factor. The lasers feature pulse durations ranging from 400 ps to 2 ns, energy levels 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 OEM integrators and researchers working with LIDAR, 3D scanning, LIBS, night vision, and more. The lasers offer both nanosecond and picosecond options and are interchangeable with the same form factor and electrical and software interfaces across wavelengths, making them a flexible and versatile solution.
The SOL series is the most compact, air-cooled, Q-switched DPSS nanosecond laser available in the power range from 4W to 40W @ 1064nm. Available @ 1064nm, 532nm, and 355nm, the SOL laser series offers excellent beam quality and high peak power, capable of up to 10W and 650µJ at 532nm and 4W @ 355nm, making it the ideal source for the most demanding industrial and scientific applications. With a rugged, compact, lightweight, and easy to use single unit design, the SOL laser is easy to integrate into micro-machining and marking applications, providing superior operational flexibility and performance/cost ratio.
The VaryDisk Series is a versatile and fully functional family of thin disk laser systems, providing high pulse energies at high average powers, suitable for laboratory investigations or industrial use. These thin disk regenerative amplifiers provide a range of beam parameters, depending on the configuration and your specific application needs. With a range of output specifications to choose from, including multiple seed lasers, customers can select the ideal configuration to meet their needs with many customization options available. The base configurations offer options for pulse widths in the fs, ps, and ns range, up to 1000 W average power, up to 150 mJ pulse energy, 1 kHz to 125 kHz rep. rate, and 1030 nm, 515 nm (SHG), and 343 nm (THG) wavelength options.
The Wedge series is a line of DPSS lasers designed specifically for OEM applications such as micro machining of hard and soft materials, specialty marking, glass and crystal engraving, LIDAR, LIBS, spectroscopy, and medical diagnostics. Thesediode–pumped lasers, based on proprietary fast Q-switching technology, are compact, sealed, and monolithic which makes them insensitive to vibrations and harsh environments. With high peak powers and relatively low energy and heat generation, they allow efficient ablation and non-linear interaction with most materials. The compact and lightweight package is a great benefit in LIDAR and other aerospace applications, while short pulses provide extremely precise time-of-flight measurements.