Hongxing Yang, Yan Wang, Ziqi Yin, Pengcheng Hu, Ruitao Yang, Jing Li, "Design of a high frequency accuracy heterodyne laser source working in a wide temperature range," Chin. Opt. Lett. 22, 041407 (2024)

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- Chinese Optics Letters
- Vol. 22, Issue 4, 041407 (2024)

Fig. 1. (a) Thermal equilibrium state; (b) thermal equilibrium temperature of the laser free-running experiment; (c) comparison of the preset temperature and actual temperature of the laser cavity.

Fig. 2. (a) Laser beat frequency at different temperatures; (b) nonequilibrium power-locking principle; (c) variation in laser frequency with error signal.

Fig. 3. (a) Structural solution of laser; (b) frequency stabilization system.

Fig. 4. Beat frequency with ISL at different ambient temperatures. (a) −20.13°C, (b) −9.22°C, (c) 8.64°C, (d) 16.13°C, (e) 28.32°C, (f) 40.13°C.

Fig. 5. (a) Comparison of nonequilibrium power and equilibrium power frequency stabilization schemes; (b) beat frequencies of the other two lasers at different temperatures.
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Table 1. Allan Variance of Laser Frequency Stabilization at Different Temperatures

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