Harness, Dickey & Pierce, P.L.C.
Laser chips and vertical external cavity surface emitting lasers using the same
Example embodiments may provide an increased efficiency laser chip and/or a vertical external cavity surface emitting laser (VECSEL) using the same. Example embodiment laser chips may include a substrate; a DBR (distributed Bragg reflector) layer on the substrate, an active layer on the DBR layer having multiple quantum wells excited by a pump beam to generate light, and/or an upper coating layer on the active layer by alternately stacking first and second layers each having different refractive indexes. Thicknesses of the first and second layers may be substantially equal to a quarter of a wavelength of light generated by the active layer.
Samsung Electronics, Co., Ltd.
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inventional additional additional additional additional additional additional additional
Jun-youn
Kim