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Semiconductor laser driver

  • US 4,796,264 A
  • Filed: 05/20/1985
  • Issued: 01/03/1989
  • Est. Priority Date: 05/23/1984
  • Status: Expired due to Fees
First Claim
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1. A semiconductor laser oscillator comprising:

  • a semiconductor laser having a threshold level;

    a means, electrically connected to a first electrode of said semiconductor laser, for supplying a bias current to said semiconductor laser beyond the threshold level of said semiconductor laser;

    a high frequency amplifier means, electrically connected to said first electrode of said semiconductor laser, for amplifying a high frequency input to produce a high frequency output current, said high frequency output current being superposed with said bias current and provided to said semiconductor laser;

    means, electrically connected between said first electrode of said semiconductor laser and an input terminal of said high frequency amplifier means, for providing positive feedback from said semiconductor laser as said high frequency input of said amplifier means; and

    wherein said high frequency amplifier means electrically oscillates near the relaxation oscillation frequency of said semiconductor laser, and said semiconductor laser generates laser light in the longitudinal multimode oscillation.

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