Laser frequency stabilization apparatus

OPT OpenIR > 半导体激光器专利数据库

	Laser frequency stabilization apparatus
其他题名	Laser frequency stabilization apparatus
	GLANCE, BERNARD
	2002-04-09
专利权人	AT&T CORP.
公开日期	2002-04-09
授权国家	美国
专利类型	授权发明
摘要	An apparatus and a method for laser frequency stabilization include a laser, a modulator, a derivative module, a Fabry-Perot etalon, a photodetector, a balanced mixer, a signal processing module, and a feedback control module. The laser has an output and lases at a single frequency. The laser has a desired frequency and provides an optical signal including a substantial frequency chirp signal. The modulator is coupled to the laser and provides a modulation signal for modulating the laser. The derivative module is coupled to the modulator and provides a derivative signal which is a time derivative of the modulation signal. The Fabry-Perot etalon is coupled to the output of the laser and has a frequency response including a plurality of resonances. One of the plurality of resonances is centered on the desired frequency. The etalon filters the optical signal according to the frequency response. The photodetector is coupled to the etalon and receives the filtered optical signal and provides a photocurrent in response to the filtered optical signal. The balanced mixer is coupled to the photodetector and to the derivative module. The balanced mixer provides a mixed signal by mixing the photocurrent with the derivative signal. The signal processing module is coupled to the balanced mixer and provides an error signal which is a time average of the mixed signal. The feedback control module is couple to the signal processing module and the laser. The feedback control module uses the error signal in order to adjust the single frequency of the laser.
其他摘要	用于激光频率稳定的装置和方法包括激光器，调制器，衍生模块，法布里 - 珀罗标准具，光电检测器，平衡混频器，信号处理模块和反馈控制模块。激光器具有输出并以单一频率激光。激光器具有所需的频率并提供包括基本频率啁啾信号的光信号。调制器耦合到激光器并提供用于调制激光器的调制信号。导数模块耦合到调制器并提供导数信号，该导数信号是调制信号的时间导数。法布里 - 珀罗标准具耦合到激光器的输出并且具有包括多个谐振的频率响应。多个中的一个共振以所需频率为中心。标准具根据频率响应过滤光信号。光电探测器耦合到标准具并接收滤波的光信号并响应滤波的光信号提供光电流。平衡混频器耦合到光电探测器和衍生模块。平衡混频器通过将光电流与导数信号混合来提供混合信号。信号处理模块耦合到平衡混频器并提供误差信号，该误差信号是混合信号的时间平均值。反馈控制模块耦合到信号处理模块和激光器。反馈控制模块使用误差信号来调整单个频率激光。
授权日期	2002-04-09
申请日期	1999-06-18
专利号	US6370170
专利状态	失效
申请号	US09/336071
公开（公告）号	US6370170
IPC 分类号	H01S5/00 \| H01S5/0687 \| H01S5/042 \| H01S3/13
专利代理人	-
代理机构	KENYON & KENYON
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/35304
专题	半导体激光器专利数据库
作者单位	AT&T CORP.
推荐引用方式 GB/T 7714	GLANCE, BERNARD. Laser frequency stabilization apparatus. US6370170[P]. 2002-04-09.

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