| 摘要 |
PURPOSE:To complete an oscillator which can simultaneously obtains an electrical signal of the microwave frequency band and a laser beam having the wavelength in the relationship with the harmonics of the frequency of such electrical signal and a high precision light frequency measuring apparatus utilizing the same oscillator. CONSTITUTION:A microwave active element 2 is coupled in series with a drive circuit of a laser oscillation element 1 and this laser oscillation element 1 is caused to operate as a microwave resonator when viewed from the side of the microwave active element 2. The microwave active element 2 oscillates with the resonance frequency of the laser oscillation element 1 and outputs a microwave signal from an output terminal 5. The laser oscillation element 1 is driven by a current flowing into the microwave active element 2 to emit a laser beam having a frequency which is a higher hermonic with respect to the self-oscillation frequency of the microwave active element 1. The frequency of laser beam can be scanned by frequency-scanning of the resonance frequency of the microwave resonator. With the frequency-scanned laser beam, a light frequency measuring apparatus for measuring the frequency of the light beam to be measured can be constituted.
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