Custom ceramic microchannel-cooled array for high-power fiber-coupled application

A low-SWaP (Size, Weight and Power) diode array has been developed for a high-power fiber-coupled application.  High efficiency (~65%) diodes enable high optical powers while minimizing thermal losses. A large amount of waste heat is still generated and must be extracted.  Custom ceramic microchannel-coolers (MCCs) are used to dissipate the waste heat.  The custom ceramic MCC was designed to accommodate long cavity length diodes and micro-lenses.  The coolers provide similar thermal performance as copper MCCs however they are not susceptible to erosion and can be cooled with standard filtered water. Continue reading

Robust DPSS Lasers for LIDAR Applications

For the past 25 years Cutting Edge Optronics (CEO) has specialized in the design, development and fielding of DPSS lasers for use in airborne LIDAR applications. Operating in these environments present significant design challenges as lasers are subjected to shocks, vibration, temperature extremes, thermal cycling and noisy aircraft electrical power. CEO presented a talk at this year’s Photonics West conference outlining these challenges and some of the design techniques used to build laser systems that can reliably perform in these environments. Continue reading

All diode-pumped 4 Joule 527 nm Nd:YLF laser for pumping Ti:Sapphire lasers

A new generation of diode-pumped solid-state lasers has been developed that enables ultra-stable Ti:Sapphire pumping at high energies. We report an injection-seeded, all diode-pumped high-energy Nd:YLF laser system based on a master oscillator power amplifier (MOPA) configuration. The laser produces pulses with over 4 J of pulse energy at 10 Hz, 527 nm, and pulse duration of ~13 ns. The laser is specifically designed to produce a uniform, flat-top beam in the near field.

Details of the laser design are discussed. The master oscillator is an injection seeded electro-optical Q-switched TEM00 mode laser. It produces stable, temporally-smooth laser pulses as the source for the system. The uniformity of the flat top beam is discussed. The pulse energy stability and beam pointing stability are thoroughly investigated and reported. The lifetime test results for the pump diodes are also presented. Continue reading

CEO supports SLAC’s Matter in Extreme Conditions Instrument Upgrade

Northrop Grumman Cutting Edge Optronics (CEO) recently delivered high energy DPSS Nd:YLF laser modules to the Department of Energy’s SLAC National Accelerator Laboratory in support of the Matter in Extreme Conditions (MEC) instrument upgrade at the Linac Coherent Light Source (LCLS) facility in Menlo Park, California. The laser modules were utilized in a newly designed diode pumped front-end that helped contribute to the instrument’s 3x energy increase and optical laser pulse refinement.

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200W Pump Laser

Green Pump Lasers for Ultrafast Amplifiers

Ti:sapphire lasers have become prominent in the field of ultrafast oscillators and amplifiers due to their broad emission bandwidth and the ability to minimize opto-thermal effects over a wide range of operating parameters. In order to build high-average-power Ti:sapphire lasers, high-quality high-average-power green pump lasers are required.

The performance of CEO pump lasers is examined in this work, particularly the 50 mJ Patara™-HP50 YLF and 200 W Patara-HP200 YAG lasers. Analysis of pulse energy performance over repetition rate is presented, as is a summary of the beam quality, optical pulse, and long-term power stability. A discussion of reliability is also included.

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High Temperature Laser Diode Arrays

Cutting Edge Optronics is a leading manufacturer of high temperature laser diode arrays that are designed to operate in harsh environments.  Diode arrays used in automotive or military/aerospace applications often experience operating temperatures ranging from 60-80oC, and CEO has a long history of supplying diode arrays that offer excellent reliability at these temperatures.

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