Optical: systems and elements – Optical frequency converter – Harmonic generator
Patent
1995-06-29
1997-03-11
Lee, John D.
Optical: systems and elements
Optical frequency converter
Harmonic generator
372 22, G02F 137
Patent
active
056107595
ABSTRACT:
Disclosed is a compact and coherent optical source using a laser that emits an incident wave at a wavelength .lambda.o.sub.i, a non-linear medium (NLM) in which the phase matching condition is verified at the wavelength .lambda.o.sub.a belonging to the set of .lambda.o.sub.i values. This optical source furthermore has two dichroic mirrors M1 and M2 at the points of entry into and exit from the non-linear medium that are highly transparent at the wavelengths .lambda.o.sub.i and highly reflective at the wavelengths .lambda.o.sub.i /2. Such a configuration advantageously enables the locking of the emission of the laser into the wavelength .lambda.o.sub.a, the recovery of a light wave at .lambda.o.sub.a /2 and, thus, the amplification of the emitted power at .lambda.o.sub.a /2. Application to blue sources.
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patent: 5309454 (1994-05-01), Taira
patent: 5483374 (1996-01-01), Tanuma
Applied Physics Letters, vol. 58, No. 20, "25 ps Pulses from a Nd:YAG Laser Mode Locked by a Frequency Doubling .crclbar.-BA.sub.2 O.sub.4 Crystal", K. A. Stankov, pp. 2203-2204, May 20,1991.
Applied Physics Letters, vol. 62, No. 21, "High Power Blue Light Generation by Frequency Doubling of a Laser Diode in a Periodically Domain-Inverted LiTaO.sub.3 Waveguide", Kazuhisa Yamamoto, et al., pp. 2599-2601, May 24, 1993.
Delacourt Dominique
Papuchon Michel
"Thomson-CSF"
Lee John D.
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