Optical parametric master oscillator and power amplifier for efficient conversion of high-energy pulses with high beam quality

Author
Arisholm, Gunnar
Nordseth, Ørnulf
Rustad, Gunnar
Date Issued
2004
Permalink
http://hdl.handle.net/20.500.12242/697
https://publications.ffi.no/123456789/697
DOI
10.1364/OPEX.12.004189
Collection
Articles
Description
Arisholm, Gunnar; Nordseth, Ørnulf; Rustad, Gunnar. Optical parametric master oscillator and power amplifier for efficient conversion of high-energy pulses with high beam quality. Optics Express 2004 ;Volum 12.(18) s. 4189-4197
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Abstract
We describe a system for parametric conversion of high-energy, Q-switched laser pulses from 1.064 µm to 2.1 µm in KTiOPO4. High beam quality and efficiency are obtained by use of a two-stage system: An optical parametric oscillator (OPO) pumped by a narrow beam with 8 mJ of energy, generates 1.9 mJ of signal energy for seeding an optical parametric amplifier (OPA). With 500 mJ pump energy, different OPA configurations produce up to 138 mJ signal energy with M^2 ≈ 2.3.
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