Pulse tail suppression in laser diode output by tunable notch filter

Mykhaylo Dubov*, D. Giannone, Igor Khrushchev, Ian Bennion

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Efficient suppression of relaxation oscillations in the output signal from an overdriven gain-switched laser diode was demonstrated. Several quantum-well distributed feedback laser diodes from different manufacturers were used for experimental analysis. A five-fold increase in the peak power was achieved for the tail-free operation. It was found that spectral filtering removed the nonlinearly chirped components resulting in pulse shortening by a factor of three.

Original languageEnglish
Pages (from-to)1404-1405
Number of pages2
JournalElectronics letters
Issue number23
Publication statusPublished - 8 Nov 2001


  • bandpass filters
  • bandwidth
  • fiber Bragg gratings
  • Notch filters
  • optical pumping
  • oscillations
  • optical pulses


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