A multi-longitudinal-mode InGaAsP laser diode was injection-locked to a low-power LiNdP4O12 laser operating at 1.319 μm. A net gain of 24 dB was measured with −28 dBm of injection power. The beat spectrum between the acousto-optically frequency-shifted LiNdP4O12 laser output and the laser diode output displays a 40 dB carrier to pedestal ratio (in 300 kHz bandwidth) under these conditions.
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Harald R. Telle (1986) studied this question.
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