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Wide and fast-frequency tuning for a stabilized diode laser |
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| Authors: | Yunfei Wang Yuqing Li Jizhou Wu Wenliang Liu Peng Li Yongming Fu Jie Ma Liantuan Xiao Suotang Jia |
| Institution: | 1. State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, College of Physics and Electronics Engineering, Shanxi University, Taiyuan 030006, China2. Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China3. College of Physics and Electronic Engineering, Shanxi University, Taiyuan 030006, China |
| Abstract: | External-cavity diode laser (ECDL) has important applications in many fundamental and applied researches. Here we report a method to fast and widely tune the frequency of a stabilized ECDL. The beat frequency between the ECDL and a frequency-locked reference laser is identified by the voltage-controlled oscillator contained in a phase detector, whose output voltage is subtracted from the flexibly controlled PC signal to generate an error signal for stabilizing the ECDL. The output frequency of the stabilized ECDL can be shifted at a short characteristic time of ~ 150 μs within a range of ~ 620 MHz. The wide and fast-frequency tuning achieved by our method is compared with other previous works. We demonstrated the performance of our method by the efficient sub-Doppler cooling of Cs atoms with the temperature as low as 6 μK. |
| Keywords: | external-cavity diode laser frequency stabilization laser cooling interaction of laser with atoms |
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