946nm Nd:YAG laser frequency doubled with periodically-poled LiNbO3

Pollnau, M., Ross, G.W., Clarkson, W.A., Smith, P.G.R., Britton, P.J. and Hanna, D.C. (1997) 946nm Nd:YAG laser frequency doubled with periodically-poled LiNbO3. In, Conference of the Swiss Physical Society, Lausanne, CH,


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Frequency doubling of a 946 nm Nd:YAG laser is a route to the generation of high average power in the blue spectral region. Periodically-poled lithium niobate (PPLN), with its combination of high nonlinearity and non-critical phase-matching offers the prospect of high conversion in a simple extra-cavity single-pass arrangement. The PPLN (length 15 mm, grating period 4.5µm ) was heated at a temperature of 140°C. With 1.5 W incident power at 946 nm in a linearly polarized fundamental mode (M2 < 1.1) and in pulsed operation at the relaxation oscillation frequency (160 kHz, 300 ns pulses), a power of 450 mW with M2 = 1.25 was generated at 473 nm. The conversion efficiency versus internal fundamental power was 40%. No photorefractive damage was observed.

Item Type: Conference or Workshop Item (Paper)
Additional Information: SPG/SSP 14(1) 24
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Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: University Structure - Pre August 2011 > Optoelectronics Research Centre
ePrint ID: 76716
Date Deposited: 11 Mar 2010
Last Modified: 27 Mar 2014 18:56
URI: http://eprints.soton.ac.uk/id/eprint/76716

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