Traveling wave oscillation type semiconductor laser
专利汇可以提供Traveling wave oscillation type semiconductor laser专利检索，专利查询，专利分析的服务。并且PURPOSE: To prevent a standing wave from occurring in a semiconductor medium so as to restrain a diving effect by a method wherein a ring-like optical resonator which optically couples both the ends of a semiconductor optical amplifier together with an optical system is provided, an optical isolator is provided at a halfway point of the ring-like resonator.
CONSTITUTION: A ring-type optical resonator is formed of an optical system composed of a collimator lens 36, a half mirror 34, and a micro-mirror 34, and a small optical isolator 32 is inserted in a halfway point of the ring-like optical system where an optical feedback is performed. In addition to this constitution, an optical filter 33 is provided at a point on an optical feedback route to provide the ring type resonator with wavelength selectivity so as to stabilize a laser in oscillation. An optical power is outputted through a half mirror 34 located on the outlet side of an optical amplifier. By this setup, light is made to circulate in an resonator only in one direction, repeatedly amplified through a semiconductor amplifier 31 circulating in one direction, and starts oscillating. In such a traveling wave type semiconductor laser, only light traveling in one direction is present in a resonator, so that a standing wave is prevented from occurring in the semiconductor medium of an optical amplifier.
COPYRIGHT: (C)1991,JPO&Japio，下面是Traveling wave oscillation type semiconductor laser专利的具体信息内容。
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