17 August 1998 Self-adaptive external resonator for second-harmonic generation in laser-diode-pumped NYAB laser using photorefractive phase conjugate feedback
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Abstract
We report the first demonstration, what is to our knowledge, of resonant second harmonic generation using a photorefractive phase conjugate feedback. Once the phase conjugator turns on, the SH output form self-frequency- doubled NYAB laser starts to increase and reaches up to 9-10 times of that without feedback. In addition, we find that the SH output fluctuates even if the phase conjugate feedback is constant. This phenomena is induced by the self- frequency-scanning of the SH output.
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Masayuki Shimosegawa, Hirohumi Watanabe, Takashige Omatsu, Akira Hasegawa, Mitsuhiro Tateda, Iwao Ogura, "Self-adaptive external resonator for second-harmonic generation in laser-diode-pumped NYAB laser using photorefractive phase conjugate feedback", Proc. SPIE 3554, Photorefractive Materials: Phenomena and Related Applications II, (17 August 1998); doi: 10.1117/12.318141; https://doi.org/10.1117/12.318141
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