Accession Number:

ADP013008

Title:

Injection Laser Threshold from the Standpoint of Collective Resonance

Descriptive Note:

Conference proceedings

Corporate Author:

RUSSIAN ACADEMY OF SCIENCES SAINT PETERSBURG IOFFE PHYSICAL-TECHNICAL INST

Report Date:

2000-06-23

Pagination or Media Count:

4.0

Abstract:

Mechanism of laser threshold is considered in terms of superradiance. Presence of short Coherent pulses has been demonstrated below at and above laser threshold in wide temperatwe range. Existence of positive feedback leads to SR pulse becomes longer. Luminescence lineshape above threshold has a complex structure but is well described using the theory of collective recombination. Spectral investigations at low and room temperatwe. as well as time coherence measurements at RT allow estimating the characteiistic time of superradiance pulse in these two modes. The maximum duration of the pulse has been found as low as 300 fs at RT and 70 fs at 77 K.

Subject Categories:

  • Electrooptical and Optoelectronic Devices
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE