Laser apparatus
AssigneesDenso Corporation, Tohoku University, Waseda University
InventorsMasashige Sato, Taku Suzuki, Hiroshi Yasaka, Nobuhide Yokota, Tomohiro Kita
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Abstract
A laser apparatus includes: a light source configured to generate laser light; and an optical negative feedback unit configured to narrow a spectral line of the laser light using optical negative feedback. A modulation signal is input to the light source to modulate a frequency of the laser light. A modulation amount in the frequency of the laser light is detected. A modulation sensitivity is calculated from (i) the modulation amount and (ii) an intensity of the modulation signal.
Claims14
A laser apparatus comprising:
- a light source configured to generate laser light;
- an optical negative feedback unit configured to narrow a spectral line of the laser light using optical negative feedback;
- a frequency modulator unit configured to input a modulation signal to the light source to modulate a frequency of the laser light;
- a modulation amount detector unit configured to detect a modulation amount in the frequency of the laser light;
- and
- a modulation sensitivity calculator unit configured to calculate a modulation sensitivity from (i) the modulation amount and (ii) an intensity of the modulation signal.
A laser apparatus comprising:
- a light source configured to generate laser light;
- an optical negative feedback circuit configured to narrow a spectral line of the laser light using optical negative feedback;
- a frequency modulator circuit configured to input a modulation signal to the light source to modulate a frequency of the laser light;
- a modulation amount detector circuit configured to detect a modulation amount in the frequency of the laser light;
- and
- one or more processors configured to calculate a modulation sensitivity from (i) the modulation amount and (ii) an intensity of the modulation signal.
Dependencies are inferred from the claim text.