Experiments on linewidth reduction by fast electrical feedback

  • M. Schaefer
  • , R. Martini
  • , S. Richter
  • , M. Petri
  • , M. Mürtz
  • , W. Urban

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

We report our first results on broadband electrical feedback applied to tunable lead-salt diode lasers. We use a heterodyne technique in combination with electronic frequency discrimination to reduce the diode-laser linewidth. The loop band width is about 10 MHz. We present results on high-frequency modulation to study the frequency response of the diode laser. From this experiment we are able to estimate the carrier tuning rate of the used lead-salt diode laser. Preliminary results in linewidth reduction by fast electrical feedback promise the possibility to apply the fast electrical feedback technique to lead-salt diode lasers.

Original languageEnglish
Pages (from-to)123-128
Number of pages6
JournalInfrared Physics and Technology
Volume37
Issue number1
DOIs
StatePublished - Feb 1996

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