• Title/Summary/Keyword: 분극반전

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Optical Parametric Oscillation in Periodically Poled Lithium Niobate Crystal (주기적으로 분극반전된 $LiNbO_3$ 결정에서 광매개증폭)

  • Kim Hong-Gi;Cha Myeong-Sik;Lee Beom-Gu
    • Proceedings of the Optical Society of Korea Conference
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    • 2001.02a
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    • pp.222-223
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    • 2001

  • Optical parametric oscillator(OPO) has been used to generate coherent and tunable laser source with birefringent phase-matching technique in various nonlinear materials. In birefringent phase-matching, the output wavelength is controlled with angle or temperature tuning of the refractive index. However these tuning methods have several limitations such as restriction of tuning wavelength due to reasonable angular and temperature tuning ranges, Poynting vector walk-off which limits the interaction length, and thermal stabilization time. (omitted)

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Fabrication of a periodically poled MgO : $LiNbO_3$ ridge waveguide for a green laser generation (녹색 광 발진을 위한 주기적 분극 반전된 MgO : $LiNbO_3$ ridge waveguide 제작)

  • Yang, W.S.;Kwon, S.W.;Song, M.K.;Lee, H.M.;Kim, W.K.;Koo, K.H.;Yoon, D.H.;Lee, H.Y.
    • Journal of the Korean Crystal Growth and Crystal Technology
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    • v.17 no.4
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    • pp.151-155
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    • 2007

  • Quasi-phase-matched (QPM) second harmonic generation (SHG) waveguide devices for a green light generation were fabricated by a periodically patterned electrode on the +Z crystal surface and homogeneous LiCl solution using a 5 mol% MgO doped congruent z-cut lithium niobate crystals. Using selective chemical etching, we confirmed the periodic (${\sim}6.8{\mu}m$) domain inverted structure and measured SHG properties of fabricated periodically poled MgO : $LiNbO_3$ ridge-type waveguides.

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