Abstract
We demonstrate a miniature self-injection locked distributed-feedback laser using resonant optical feedback from a high-Q crystalline whispering-gallery-mode resonator. The linewidth reduction factor is greater than 10,000, with resultant instantaneous linewidth of less than . The minimal value of the Allan deviation for the laser- frequency stability is at the integration time of . The laser possesses excellent spectral purity and good long-term stability.
© 2010 Optical Society of America
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