发明名称 |
WAVELENGTH STABILIZED LIGHT SOURCE |
摘要 |
A wavelength stabilized light source includes a laser diode which emits a laser beam of a wavelength of 1.56 .mu.m. A second-harmonic generator generates a second-harmonic light of the laser beam. The second-harmonic light enters a resonator which includes a resonance cell in which 87Rb atoms are filled. A phase-modulated microwave is irradiated on said resonator. The resonator outputs a double resonance signal when the wavelength of the second-harmonic light is equal to a resonance wavelength of 87Rb and the frequency of the microwave is equal to a transition frequency of 87Rb. A first control circuit controls the microwave so that the frequency of the microwave is equal to the transition frequency. A second control circuit controls the laser diode so that the wavelength of the second-harmonic light is equal to the resonance wavelength of 87Rb. Thereby, the wavelength of the emitted laser beam is stabilized at 1.56 .mu.m. |
申请公布号 |
CA1303118(C) |
申请公布日期 |
1992.06.09 |
申请号 |
CA19890610062 |
申请日期 |
1989.08.31 |
申请人 |
FUJITSU LIMITED |
发明人 |
CHIBA, KAZUHARU;NAKAJIMA, YOSHIFUMI;SUMIYOSHI, HIDEO |
分类号 |
G02F1/37;H01S5/0687;H04B10/50;H04B10/572 |
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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