Spectral characteristics of semiconductor lasers with optical feedback

Spectral characteristics of semiconductor lasers with optical feedback

Optical feedback-induced changes in the output spectra of several GaAlAs lasers operating at 0.83 μm are described. The feedback radiation obtained from a mirror 60 cm away from the laser is controlled in intensity and phase. Spectral line narrowing or broadening is observed in each laser depending...

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Veröffentlicht in:IEEE journal of quantum electronics 1982-04, Vol.18 (4), p.555-564
Hauptverfasser: Goldberg, L., Taylor, H., Dandridge, A., Weller, J., Miles, R.
Format: Artikel
Sprache:eng
Schlagworte:
Laser feedback
Laser modes
Laser noise
Laser transitions
Mirrors
Optical control
Optical feedback
Phase noise
Semiconductor lasers
Stability
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Zusammenfassung:Optical feedback-induced changes in the output spectra of several GaAlAs lasers operating at 0.83 μm are described. The feedback radiation obtained from a mirror 60 cm away from the laser is controlled in intensity and phase. Spectral line narrowing or broadening is observed in each laser depending on the feedback conditions. Minimum linewidths observed with feedback are less than 100 kHz. Improved wavelength stability is also obtained with optical feedback resulting in 15 dB less phase noise. An analytical model for the three-mirror cavity is developed to explain these observations.
ISSN:0018-9197
1558-1713
DOI:10.1109/JQE.1982.1071581