Patent ID: 9531164
Filing Date: 2016-12-27
CPC Classification: H01L,H01S

Claim Text:
1. An optical device comprising: a gallium and nitrogen containing substrate member having an m-plane nonpolar crystalline surface region characterized by an off-cut orientation of about −2 degrees to about 2 degrees toward (000-1) and less than about 0.5 degrees toward (11-20), the off-cut orientation not inclusive of zero degrees toward (000-1); a laser stripe region formed overlying a portion of the m-plane nonpolar crystalline surface region, the laser stripe region being characterized by a cavity orientation substantially parallel to a c-direction, the laser stripe region having a first end and a second end; a first cleaved c-face facet provided on the first end of the laser stripe region, the first cleaved c-face facet comprising a first mirror surface, the first cleaved c-face facet having first laser scribed regions extending intermittently along a first upper edge of the first cleaved c-face facet to provide a first saw tooth profile, wherein each of the first laser scribed regions forms a tooth of the first saw tooth profile, each of the first laser scribed regions is spaced from adjacent ones of the first laser scribed regions by smooth surfaces of the first cleaved c-face facet, and a depth that the first laser scribed regions extend downward from the first upper edge toward the m-plane nonpolar crystalline surface region varies across the first cleaved c-face facet; and a second cleaved c-face facet provided on the second end of the laser stripe region, the second cleaved c-face facet comprising a second mirror surface, the second cleaved c-face facet having second laser scribed regions extending intermittently along a second upper edge of the second cleaved c-face facet to provide a second saw tooth profile, wherein each of the second laser scribed regions forms a tooth of the second saw tooth profile, each of the second laser scribed regions is spaced from adjacent ones of the second laser scribed regions by smooth surfaces of the second cleaved c-face facet, and a depth that the second laser scribed regions extend downward from the second upper edge toward the m-plane nonpolar crystalline surface region varies across the second cleaved c-face facet.