Coherent light generators – Particular beam control device – Modulation
Patent
1995-03-02
1996-12-31
Scott, Jr., Leon
Coherent light generators
Particular beam control device
Modulation
372 18, H01S 310
Patent
active
055901433
ABSTRACT:
A multiple-frequency-modulation mode-locked laser device which generates high-speed optical pulse trains and can be used as a high-speed optical pulse source in the fields of optical communications and optical measurement is presented, wherein the repetition frequency F.sub.rep and the pulse width .DELTA.t are able to be controlled independently with only the laser itself.
A drive signal generation means is provided which generates a frequency-mixed drive signal mixed from at least two different frequencies f.sub.1 (=N.sub.1 f.sub.r), f.sub.2 (=N.sub.2 f.sub.r), . . . , which are integral multiples of the frequency spacing f.sub.r (=c/R) of the longitudinal modes of either a ring cavity or a Fabry-Perot cavity. This frequency-mixed drive signal is supplied to an optical modulation means of the cavity.
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Kawanishi Satoki
Saruwatari Masatoshi
Takara Hidehiko
Jr. Leon Scott
Nippon Telegraph and Telephone Corporation
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