Patent ID: 7230967

Claim:
A laser comprising: first and second electrodes provided at different elevations and which are approximately parallel to one another, first and second sectional sidewalls provided at least partially between the first and second electrodes, an elongated cavity defined between opposing major surfaces of the first and second electrodes and between the first and second sidewalls, and wherein an optical axis of the laser is defined at least partially in the elongated cavity along a lengthwise direction of the cavity so that the optical axis is provided between opposing approximately parallel surfaces of the first and second electrodes, a plurality of protrusions formed on the first electrode, the protrusions on the first electrode being spaced apart from one another and extending into the cavity from the first electrode so that the protrusions extends from a main body of the first electrode into the cavity in a direction transverse to the optical axis of the laser; and wherein each of the protrusions viewed cross sectionally is substantially triangular in shape so as to have an apex at a location farthest from the first electrode.