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Gas spectroscopy

  • US 5,448,071 A
  • Filed: 04/16/1993
  • Issued: 09/05/1995
  • Est. Priority Date: 04/16/1993
  • Status: Expired due to Fees
First Claim
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1. A spectroscopy device, comprising:

  • a laser diode; and

    a circuit which generates a laser diode driving current, said laser diode driving current having a periodic waveform comprising a plurality of constant current intervals, a first current magnitude being generated during one of said constant current intervals of a period, a second current magnitude being generated during another of said constant current intervals of said period, a third current magnitude being generated during another of said constant current intervals of said period, said laser diode driving current being supplied to said laser diode.

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