| 摘要 |
<p>A system and method for emitting a plurality of second harmonic light frequencies that is generally unaffected by small variations in external cavity length and temperature. An illustrative embodiment provides a laser system (400) that comprises a semiconductor gain region (402) operating within the coherence collapse regime, an intra-cavity nonlinear optical medium (412), and a feedback reflector (416). The semiconductor gain region (402) operates in the coherence collapse regime and produces broad frequency fundamental light (418). The nonlinear resonator (412) doubles a first portion of the broad frequency fundamental light and emits a plurality of second harmonic light frequencies (414) external to the laser system. A second portion of the broad frequency fundamental light (412) is reflected into the semiconductor gain region (402) with a feedback power ratio sufficient to cause the semiconductor gain region (402) to operate in the coherence collapse regime.</p> |
