Whispering-gallery-mode-resonator-based ultranarrow linewidth external-cavity semiconductor laser
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 200 Hz. The minimal valu...
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Veröffentlicht in: | Optics letters 2010-08, Vol.35 (16), p.2822-2824 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | 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 200 Hz. The minimal value of the Allan deviation for the laser-frequency stability is 3 x 10(-12) at the integration time of 20 micros. The laser possesses excellent spectral purity and good long-term stability. |
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ISSN: | 0146-9592 1539-4794 |
DOI: | 10.1364/ol.35.002822 |