发明名称 |
Light source device for use in detecting gas |
摘要 |
A light source device equipped with an oscillator (wavelength converting means) (2) which receives a pump light (L1) from a pump light source unit (1) and generates a signal light and an idler light by the optical parametric oscillation (oscillation according to pseudo phase matching method), characterized in that the oscillator has a LiNbO3 crystal doped with MgO (3) as the wavelength converting crystal thereof. The LiNbO3 crystal doped with MgO (3) has a periodic polarization reversion structure for pseudo phase matching whose polarization reversion period is such that renders possible to generate a light having an absorption wavelength of the gas to be detected at a crystal temperature lower than 100 DEG C. The above polarization reversion period is significantly different from conventional polarization reversion periods of a LiNbO3 crystal known for various gases. The light source device for use in detecting a gas requires no large sized heating apparatus for preventing the optical damage of a wavelenght conversion crystal and thus is compact, and also is excellent in explosion protection. |
申请公布号 |
AU4615900(A) |
申请公布日期 |
2000.12.12 |
申请号 |
AU20000046159 |
申请日期 |
2000.05.22 |
申请人 |
MITSUBISHI CABLE INDUSTRIES, LTD. |
发明人 |
MASARU NAKAMURA;TAKASHI TSUNEKAWA;KOICHI TANIGUCHI;KAZUYUKI TADATOMO |
分类号 |
G01N21/01;G01N21/35;G01N21/3504;G02F1/35;G02F1/39 |
主分类号 |
G01N21/01 |
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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