Giving to CREOL
CREOL, The College of Optics & Photonics

Seminar: “Pushing the Limits of Peak Power in Fiber Lasers”, Lawrence Shah

Thursday, August 16, 2012 11:00 AM to 12:00 PM

Lawrence Shah
CREOL – The College of Optics and Photonics
University of Central Florida

Fiber lasers represent one of the most rapidly growing facets of the solid-state laser market.  Compact and robust integration, via splicing of system components, have made fiber lasers the preferred choice in applications ranging from booster amplifiers for telecommunications to optical gyroscopes for navigation.  Since 2000 the range of applications has continued to expand rapidly, as the beneficial thermal properties of fiber lasers have enabled scaling to multi-kW average power with diffraction-limited beam quality.  Similarly there have been significant advances in high peak power generation and amplification in fiber lasers with peak powers >1 MW in fiber and >1 GW after chirped pulse amplification.
While most fiber lasers rely upon ytterbium and/or erbium as the active dopants, interest in thulium has dramatically increased as it offers high efficiency, ,high average power, high energy, and high peak power with ~2 mm wavelength.  This presentation will summarize Tm:fiber laser development efforts within the Laser Plasma Laboratory, including cutting-edge research on CW, nanosecond, and ultrashort pulse lasers.  Although thulium is not capable of matching the average power or efficiency of ytterbium as a fiber laser dopant, it does have the potential to surpass current peak power limits beyond 10 MW in fiber and 10 GW via chirped pulse amplification.

Lawrence Shah received his MS and PhD degrees in optical physics In November of 2001, from CREOL and the University of Central Florida as a member of the Laser Plasma Laboratory (LPL). From 2001-2002, he served as a post-doctoral researcher at Lawrence Livermore National Laboratory.  He was a Senior Application Development Engineer at the IMRA America Applications Research Laboratory from 2002-2004, and a Laser Research/Advanced Application Development Scientist at IMRA America from 2004-2008.  In 2008, he returned to CREOL as a Senior Research Scientist within the Townes Laser Institute, leading the laser development group in LPL.  He currently manages projects developing Tm:fiber lasers, Yb:YAG thin disk lasers, and OPCPA systems. 
Dr. Shah has been awarded five patents, and has authored over 20 peer-reviewed publications on the development of laser systems and their applications.  He is a member of the Optical Society of America (OSA), the International Society for Optics and Photonics (SPIE), and the Directed Energy Professional Society (DEPS), and has served as a member of the Ultrafast program subcommittee for CLEO.

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Lawrence Shah

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