Mode Locking Of (GaAI)As Injection Lasers
- Creators
- Figueroa, Luis
- Lau, Kam
- Yariv, Amnon
- Others:
- Krikorian, Esther
- Stoll, Harold M.
Abstract
The important experimental parameters affecting the mode locking of a variety of (GaAl)As injection lasers operating in an external optical cavity are described. We find that short detector-limited pulses (less than 60 psec) with 100% modulation depth can only be obtained using lasers that exhibit either an anomalous narrowband noise resonance or self pulsations. Little or no mode locking is observed in lasers having the normal broad noise resonance. The maximum frequency of the mode-locked pulses is ≈1 GHz and is limited by the laser and not the external cavity. The observed amplitude, pulse width, and frequency of the mode-locked pulses are correlated to the degree of self-pulsation and the external cavity length. The experimental results are in qualitative agreement with a model that uses the rate equations modified by either electron traps or saturable absorbers and a delayed feedback term. Our results appear to imply that mode locking in (GaAl)As injection lasers is related to saturable absorbing centers and is very similar to passive mode locking in dye lasers.
Additional Information
© 1981 Society of Photo-Optical Instrumentation Engineers (SPIE). The author is very grateful to D. Botez of the RCA Research Laboratories, Princeton, New Jersey, for providing the special CDH lasers used in this study. The author is also grateful to Peter Hankin and C.J. Hwang of General Optronics Corporation, South Plainfield, New Jersey, for providing some of the specially selected proton- stripe lasers used in this study. The author also wishes to thank R.V. Schmidt, G.L. Tangonan, and T.R. Ranganath for helpful discussions. Finally, the author wishes to thank C.W. Slayman for his valuable assistance with high-resolution pulse measurements and D.L. Lewis for experimental assistance. This work was partially supported by DARPA contract N00173-78-C-0192, which was monitored by the Naval Research Laboratory.Attached Files
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Additional details
- Eprint ID
- 87722
- Resolver ID
- CaltechAUTHORS:20180710-142853150
- Defense Advanced Research Projects Agency (DARPA)
- N00173-78-C-0192
- Created
-
2018-07-10Created from EPrint's datestamp field
- Updated
-
2021-11-15Created from EPrint's last_modified field
- Series Name
- Proceedings of SPIE
- Series Volume or Issue Number
- 269