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 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.
Liang
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W
OEwaves Inc., 2555 E. Colorado Boulevard, Suite 400, Pasadena, California 91107, USA.
Ilchenko
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VS
Savchenkov
A A
AA
Matsko
A B
AB
Seidel
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D
Maleki
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L
D004566:Electrodes; D007834:Lasers; D008027:Light; D012666:Semiconductors