发明名称 |
Optical waveguide and second harmonic generator. |
摘要 |
<p>An optical waveguide apparatus arranged such that a Ta2O5-TiO2 system amorphous thin film (12) is formed on a substrate (11). This optical waveguide apparatus can perform optical waveguiding at high efficiency. Also, an optical waveguide-type second harmonic generator of Cerenkov radiation type arranged such that the amorphous thin film is formed on a non-linear optical crystal substrate. This optical waveguide-type second harmonic generator can efficiently perform the confinement of light, whereby a fundamental wave of near-infrared rays can be received and a second harmonic wave radiated to the substrate side can be obtained with high efficiency. Further, in a second harmonic generator (SHG) in which the amorphous optical waveguide is formed on a surface of an LiNbO3 non-linear optical crystal substrate (11) on which surface is formed a periodically-poled region (10), this second harmonic generator can very efficiently generate a light having a wavelength of half of a semiconductor laser light of 0.8 micrometer band by selecting a relationship between the periodically-poled region cycle ( LAMBDA ) and the thickness (h) of the optical waveguide.</p> |
申请公布号 |
EP0365039(A2) |
申请公布日期 |
1990.04.25 |
申请号 |
EP19890119535 |
申请日期 |
1989.10.20 |
申请人 |
SONY CORPORATION |
发明人 |
TAMADA, HITOSHI;SAITOH, MASAKI |
分类号 |
G02F1/35;G02F1/37;G02F1/377 |
主分类号 |
G02F1/35 |
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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