Spectral Linewidth of MQW DFB Lasers with Intensity-Modulated TM-Polarized Light Injection

Hiroshi Yasaka, Kazuo Kasaya, Kiyoto Takahata, Mitsuru Naganuma

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The spectral linewidth of a multiple-quantum-well (MQW) distributed feedback (DFB) laser is measured when intensity-modulated orthogonally-polarized (transverse magnetic (TM) mode) light is injected into the laser. The spectral linewidth does not change when the modulation frequency is higher than several hundred megahertz and is almost the same as without light injection. However, it broadens when the injected orthogonally polarized light modulation frequency is close to zero. The line shape of the MQW DFB laser's lasing light becomes non-Lorentzian in shape below a modulation frequency of 500 MHz.

Original languageEnglish
Pages (from-to)679-682
Number of pages4
JournalIEEE Photonics Technology Letters
Volume4
Issue number7
DOIs
Publication statusPublished - 1992
Externally publishedYes

Fingerprint

Distributed feedback lasers
distributed feedback lasers
quantum well lasers
Light polarization
Linewidth
polarized light
Semiconductor quantum wells
Frequency modulation
injection
frequency modulation
Light modulation
light modulation
Laser modes
line shape
lasing
Lasers
lasers

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy (miscellaneous)

Cite this

Spectral Linewidth of MQW DFB Lasers with Intensity-Modulated TM-Polarized Light Injection. / Yasaka, Hiroshi; Kasaya, Kazuo; Takahata, Kiyoto; Naganuma, Mitsuru.

In: IEEE Photonics Technology Letters, Vol. 4, No. 7, 1992, p. 679-682.

Research output: Contribution to journalArticle

Yasaka, Hiroshi ; Kasaya, Kazuo ; Takahata, Kiyoto ; Naganuma, Mitsuru. / Spectral Linewidth of MQW DFB Lasers with Intensity-Modulated TM-Polarized Light Injection. In: IEEE Photonics Technology Letters. 1992 ; Vol. 4, No. 7. pp. 679-682.
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