Prospects for a four-level super-radiant laser with ultra-narrow linewidth at 1469 nm based on cesium

Yanfei Wang; Caihong Dai; Zhifeng Wu; Xiangzhao Li

doi:10.1117/12.2037222

19 December 2013 Prospects for a four-level super-radiant laser with ultra-narrow linewidth at 1469 nm based on cesium

Yanfei Wang, Caihong Dai, Zhifeng Wu, Xiangzhao Li

Proceedings Volume 9046, 2013 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems; 90460J (2013) https://doi.org/10.1117/12.2037222
Event: International Conference on Optical Instruments and Technology (OIT2013), 2013, Beijing, China

Abstract

We propose a four-level superradiant laser system based on Cs at 1469 nm corresponding to the transition of 7S_1/2 and 6P_3/2 with a 459.3 nm pumping laser. With density matrix method, we calculate the relative population probabilities at each level theoretically. In a steady state, when the Rabi frequency is set to 3.5 MHz, 5.1% atoms are at 7S_1/2 level while 1.9% at 6P_3/2 level, which leads to the population inversion between the two levels. We design the experiment setup for the superradiant laser. In the steady state, the average photon number in the cavity is 1.1 × 10⁶. According to the further calculation, the power of output superradiant laser is 0.17 mW and the laser linewidth is 17 Hz. This calculation method can also be used in the area of optical metrology.

Citation Download Citation

Yanfei Wang, Caihong Dai, Zhifeng Wu, and Xiangzhao Li "Prospects for a four-level super-radiant laser with ultra-narrow linewidth at 1469 nm based on cesium", Proc. SPIE 9046, 2013 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems, 90460J (19 December 2013); https://doi.org/10.1117/12.2037222

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