半導体レーザーにおける自然放出光の効果
1981 年 50 巻 7 号 p. 748-754
詳細
1981 年 50 巻 7 号 p. 748-754
Effects of the spontaneous emission in the semiconductor injection lasers are reviewed and discussed. This effect influences to the laser operation in various aspects.
The difinition and derivation of spontaneous emission factor are given followed by the measuring method. In the conventional injection lasers, the spontaneous emission factors are evaluated to be between 10-5 to 10-6.
The effects of spontaneous emission to the lasing properties are discussed related with identification of the threshold current, the lasing spectral width, the single longitudinal mode condition, and the influence to the direct modulation. The effects of spontaneous emission discussed above is essentially common to other lasers.
