Linewidth Reduction of a 1.5 μm InGaAsP Laser by Electrical Feedback
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概要
- 論文の詳細を見る
An electrical feedback technique was proposed for stable reduction of the spectral linewidth of a 1.5 μm InGaAsP laser (DFB type). By controlling the injection current with a servo control circuit of 0.5 kHz 〜 0.8 GHz bandwidth, the linewidth was reduced by more than five times that of the free running laser. The minimum value obtained here was 2 MHz. Attainable minimum value, which was limited by the shot noise of the detector, was estimated as being 1.0×10^<-6> times that of the value given by the modified Schawlow-Townes formula.
- 社団法人応用物理学会の論文
- 1985-04-20
著者
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Ohtsu Motoichi
Interdisciplinary Graduate School Of Science And Engineering Tokyo Institute Of Technology
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Kotajima Shinichi
International Cooperation Center For Science And Technology Tokyo Institute Of Technology
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