发明申请
US20070110118A1 Vertical external cavity surface emitting laser capable of recycling pump beam 审中-公开
垂直外腔表面发射激光器能够回收泵浦光束

Vertical external cavity surface emitting laser capable of recycling pump beam
摘要:
A vertical external cavity surface emitting laser (VECSEL) using end pumping in which a pumping beam is recycled to increase pumping beam absorption is provided. The VECSEL comprises: an active layer for generating and emitting signal light with a predetermined wavelength; an external mirror separated from and facing a top surface of the active layer and adapted to transmit a first portion of the signal light generated by the active layer and to reflect a second portion of the signal light to the active layer; a pump laser for emitting a pumping beam to excite the active layer toward the top surface of the active layer; and a double band mirror (DBM) positioned beneath the lower surface of the active layer and adapted to reflect both the signal light generated by the active layer and a portion of the pumping beam which is not absorbed in the active layer.
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