发明名称 |
Optical wavelength-converting device for guided-wave second-harmonic generation in Cerenkov radiation mode. |
摘要 |
<p>An optical wavelength-converting device for generating the second-harmonic wave through Cerenkov radiation has a substrate (12) made from nonlinear optical crystal which acts as a cladding layer. Formed on the top surface of the substrate is a long, narrow waveguide layer (16), whose refractive index is larger than that of the substrate. In the substrate (12), multi-layered domain-inverted sections (14a, 14b, 14c) are formed. With this arrangement, the nonlinear optical coefficient is locally changed, there by compensating for phase mismatching between the fundamental wave and the second-harmonic wave in the direction perpendicular to the substrate's surface. This compensation helps improve the efficiency in converting the laser input light (18) of the fundamental wave into the second-harmonic wave (20). <IMAGE></p> |
申请公布号 |
EP0445984(A2) |
申请公布日期 |
1991.09.11 |
申请号 |
EP19910301716 |
申请日期 |
1991.03.01 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
HATAKOSHI, GENICHI, C/O INTELLECTUAL PROPERTY DIV.;TERASHIMA, KAZUTAKA C/O INTELLECTUAL PROPERTY DIV.;KAWACHI, MASARU, C/O INTELLECTUAL PROPERTY DIV.;UEMATSU, YUTAKA, C/O INTELLECTUAL PROPERTY DIV. |
分类号 |
G02F1/37;G02F1/377;G02F1/383 |
主分类号 |
G02F1/37 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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