Dual-Wavelength Bad Cavity Laser as Potential Active Optical Frequency Standard*
2015
We experimentally realize the dual-wavelength bad cavity laser for the first time. As the Cs cell temperature is kept between 118°C and 144°C, both the 1359 nm and 1470 nm lasing outputs of dual-wavelength bad cavity laser are detected. The laser output power of dual-wavelength bad cavity laser is measured when changing the 455 nm pumping laser frequency and power at 127°C Cs cell temperature. Both the 1359 nm laser and the 1470 nm laser are working at the deep bad cavity regime, and the ratio between the linewidth of cavity mode and the laser gain bandwidth a ≈ 40 for 1359 nm and 1470 nm lasers. The 1470 nm laser linewidth is measured to be 407.3 Hz. The dual-wavelength bad cavity laser operating on atomic transitions demonstrated here has a potential in the application as a stable optical local oscillator, even an active optical frequency standard directly in the future.
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