Chen Jianguo. Dual-wavelength oscillation of semiconductor lasers in external cavities[J]. Chinese Journal of Lasers, 1985, 12(11): 668
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Dual-wavelength oscillation of a semiconductor laser in an external cavity has been observed. This phenomenon has been attributed to the interference of the two feedback beams, of which one pass through the active layer and the other through the cladding layer (s). The modulation phenomenon on the tuning curve of the tunable semiconductor laser in the external cavity has therefore been explained.