Efficient injection-seeded kHz picosecond LBO optical parametric generator

We report a highly efficient optical parametric generator (OPG) in lithium triborate (LBO). A frequency-doubled passively mode-locked diode-pumped Nd:YVO 4 oscillator amplifier (MOPA) system is used as the pump radiation source. Focussing according to the theory of Boyd and Kleinman leads to a pump...

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Bibliographic Details
Published in:Applied physics. B, Lasers and optics Lasers and optics, 2011-01, Vol.102 (1), p.25-29
Main Authors: Traub, T., Ruebel, F., L’huillier, J. A.
Format: Article
Language:English
Subjects:
Beams (radiation)
Conversion
Density
Engineering
Generators
Lasers
LBO
Nucleation
Optical Devices
Optics
Photonics
Physical Chemistry
Physics
Physics and Astronomy
Pumps
Quantum Optics
Tuning
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Summary:We report a highly efficient optical parametric generator (OPG) in lithium triborate (LBO). A frequency-doubled passively mode-locked diode-pumped Nd:YVO 4 oscillator amplifier (MOPA) system is used as the pump radiation source. Focussing according to the theory of Boyd and Kleinman leads to a pump power density of 50 GW/cm 2 , which is well below the damage threshold of LBO of 80 GW/cm 2 . The overall conversion efficiency reaches a value of 72% measured at degeneracy. The tuning range of the OPG ranges from 760 nm (signal) to 1770 nm (idler) when referring to an overall conversion efficiency of 50%. The beam quality is excellent for conversion efficiencies below 40% ( M 2
ISSN:0946-2171
1432-0649
DOI:10.1007/s00340-010-4333-y