Wavelength stabilized light source

Details Wavelength stabilized light source Wavelength stabilized light source

H - Electricity

04

B

315/24

H04B 10/155 (2006.01) H01S 5/0687 (2006.01) G02F 1/37 (2006.01)

Patent

CA 1303118

ABSTRACT OF THE DISCLOSURE A wavelength stabilized light source includes a laser diode which emits a laser beam of a wavelength of 1.56 µm. 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 µm.

610062

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