Andrei Starodoumov
Coherent, Inc.
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Publication
Featured researches published by Andrei Starodoumov.
Proceedings of SPIE | 2008
Andrei Starodoumov; Dave R. Dudley; Stuart McLean; Alexander Steinmetz; Norman Hodgson
We report on a hybrid fiber MOPA + solid-state amplifier for frequency conversion and compare a hybrid scheme versus all- fiber MOPA. Using a thoroughly designed master oscillator and optimized fiber amplifiers we were able to achieve 15-30ns long pulses at average powers above 20 W with a good spectral quality and suppressed SBS. Bulk Vanadate amplifiers boosted the 1064nm output power to greater 65W at pulse repetition rates of 300-500 kHz. More than 35 W in green and 20 W of UV light has been obtained at pulse repetition rates above 300 kHz and pulse energies of 30-100 μJ.
Proceedings of SPIE | 2011
Andrei Starodoumov; Norman Hodgson
Fiber MOPAs in the infrared wavelength region offer the advantage of high single mode output powers, independent selection of pulse repetition rates and pulse durations, and access to high repetition rates. Despite these performance advantages, most industrial and scientific applications in the visible and the ultraviolet spectral range are still dominated by solid state lasers. We will give an overview of the technical challenges of harmonic generation in fiber lasers and fiber amplifiers and discuss the state-of-the-art and future of Fiber MOPAs and bulk solid state lasers with harmonic generation.
Proceedings of SPIE, the International Society for Optical Engineering | 2009
Andreas Diening; Stuart McLean; Andrei Starodoumov
Quasi-cw UV light sources are of interest for replacing frequency-doubled Ar-Ion lasers in several applications. Our target application in semiconductor inspection requires a narrow bandwidth cw or quasi-cw source at 258nm, which cannot be achieved by frequency converting the output of a (modelocked) Neodymium-based laser. We developed a fiber MOPA system which operates at a high repetition rate of 5MHz and generates 1ns long pulses. The system consists of a low power oscillator and four consecutive amplifier stages. which boost the average power to 40W at 1031nm. The IR output of the fiber system is frequency doubled and quadrupled using LBO and CLBO crystals for SHG and FHG, respectively. We achieved SHG conversion efficiencies of up to 82% and a UV power of up to 14W.
Archive | 2006
Andrei Starodoumov
Archive | 2004
Andrei Starodoumov; Murray K. Reed
Archive | 2004
Serguei G. Anikitchev; Kevin Elton Lindsay; Andrei Starodoumov
Archive | 2008
Andrei Starodoumov; Norman Hodgson; Dmitri Simanovski; R. Russel Austin
Archive | 2005
Andrei Starodoumov; Skip Bettencourt; Paul Crittenden
Archive | 2012
Norman Hodgson; Dmitri Simanovski; Andrei Starodoumov
Archive | 2006
Andrei Starodoumov; Skip Bettencourt