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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 8,
  • Issue 5,
  • pp. 496-498
  • (2010)

Frequency-stabilized diode laser at 780 nm with a continuously locked time over 100 h

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Abstract

Two extended-cavity diode lasers at 780 nm which are longtime frequency-stabilized to Rb87 saturated absorption signals are reported. A high-performance frequency-locking circuit module using a first-harmonic detection technique is designed and achieved. Two lasers are continuously frequency-stabilized for over 100 h in conventional laboratory condition. The Allan standard deviation of either laser is estimated to be 1.3×10<sup>-11</sup> at an integration time of 25 s. The system environment temperature drift is demonstrated to be the main factor affecting long-term stability of the stabilized lasers based on our correlation study between beat frequency and system environment temperature.

© 2010 Chinese Optics Letters

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