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	Method and device for implementing ramsey-CPT atomic frequency standard by microwave periodic on-off modulation vcsel
	YUN, ENXUE; DENG, WEI; ZHANG, YI; GU, SIHONG
	2011-11-10
著作权人	WUHAN INSTITUTE OF PHYSICS AND MATHEMATICS, CHINESE ACADEMY OF SCIENCES
专利号	WO2011137647A1
国家	世界知识产权组织
文献子类	发明申请
其他题名	Method and device for implementing ramsey-CPT atomic frequency standard by microwave periodic on-off modulation vcsel
英文摘要	A method and a device for implementing a Ramsey-CPT atomic clock by microwave On-Off modulation VCSEL are disclosed. The method includes the following steps: A, coupling direct current and microwave to a laser tube, scanning the direct current to obtain a plurality of absorption peaks and locking the direct current; B, switching on and off the microwave to realize equivalent laser pulse, and scanning the microwave to obtain Ramsey-CPT stripes; and C, locking the microwave to obtain stable frequency output. The device is characterized in that: a current source is connected with a Bias-Tee, a microwave source is connected with the Bias-Tee through a microwave switch, the Bias-Tee is connected to a laser generating device, the output laser passes through a physical system and then enters a laser detection device, and control equipment is connected with the current source, the microwave source, the microwave switch and the laser detection device respectively. The method and the device enable laser-atom periodic interaction through microwave On-Off, thereby providing a more predominant frequency discrimination curve compared with the traditional CPT scheme, and implementing more stable atomic clock. In addition, compared with the Ramsey-CPT atomic clock by using the AOM with larger volume and higher power consumption, the device has a simple structure, adopts a unique method, is easy for microminiaturization, and overcomes the key technology of the chip Ramsey-CPT atomic clock.
公开日期	2011-11-10
申请日期	2010-12-09
状态	未确认
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/91219]
专题	半导体激光器专利数据库
作者单位	WUHAN INSTITUTE OF PHYSICS AND MATHEMATICS, CHINESE ACADEMY OF SCIENCES
推荐引用方式 GB/T 7714	YUN, ENXUE,DENG, WEI,ZHANG, YI,et al. Method and device for implementing ramsey-CPT atomic frequency standard by microwave periodic on-off modulation vcsel. WO2011137647A1. 2011-11-10.

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