Highly efficient green-light generation by quasi-phase-matched frequency doubling of picosecond pulses from an amplified mode-locked Nd:YLF laser
- Optoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ (United Kingdom)
We report on first-order quasi-phase-matched frequency doubling of picosecond pulses to the green, using a sample of periodically poled lithium niobate. In cw mode-locked operation, 330 mW of average green power was generated with an average conversion efficiency of {approximately}52{percent}. With a quasi-cw mode-locked pulse train an average conversion efficiency of {approximately}65{percent} was achieved, and 1.3 W of green power (average power within the 10-{mu}s pulse envelope) was produced. At these powers there was no significant photorefractive damage, as confirmed by measured M{sup 2} beam-quality factors of {approximately}1.1 for both output fundamental and second-harmonic beams. {copyright} {ital 1996 Optical Society of America.}
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 436465
- Journal Information:
- Optics Letters, Vol. 21, Issue 6; Other Information: PBD: Mar 1996
- Country of Publication:
- United States
- Language:
- English
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