公开(公告)号：US08472022B2

公开(公告)日：2013-06-25

申请号：US12746398

申请日：2008-12-05

Applicant: Jong Hann Chow ,  Malcolm Bruce Gray ,  Ian Charles Murray Littler ,  David Ernest McClelland

Inventor： Jong Hann Chow ,  Malcolm Bruce Gray ,  Ian Charles Murray Littler ,  David Ernest McClelland

IPC: G01N21/00

CPC classification number: G01M11/005 ,  G01J3/433 ,  G01N21/39 ,  G01N2021/391 ,  H01S3/1392 ,  H01S3/1398

Abstract: A system and method for spectroscopic detection of loss in a resonator cavity is disclosed. The system can include a number of components. A tunable laser source can generate a laser beam. A frequency locking system can lock the frequency of the laser beam to a resonance of the resonator cavity or lock the length of the cavity to the frequency of the laser beam. The first modulation element can modulate the laser beam at a first modulation frequency to generate a modulated laser beam. The input coupler can direct the modulated laser beam into the resonator cavity. The first directing element can direct a first portion of light reflected from the input coupler to a first photodetector. The first demodulator can demodulate the first modulation signal to generate a first error signal which is a function of the loss in the resonator cavity.

Abstract translation: 公开了一种用于光谱检测谐振器腔中的损耗的系统和方法。 该系统可以包括多个组件。 可调激光源可以产生激光束。 频率锁定系统可以将激光束的频率锁定到谐振器腔的谐振或将腔的长度锁定到激光束的频率。 第一调制元件可以以第一调制频率调制激光束以产生调制的激光束。 输入耦合器可以将调制的激光束引导到谐振腔中。 第一引导元件可以将从输入耦合器反射的光的第一部分引导到第一光电检测器。 第一解调器可以解调第一调制信号以产生作为谐振器腔中的损耗的函数的第一误差信号。

公开(公告)号：US20100315642A1

公开(公告)日：2010-12-16

申请号：US12746398

申请日：2008-12-05

Applicant: Jong Hann Chow ,  Malcolm Bruce Gray ,  Ian Charles Murray Littler ,  David Ernest McClelland

Inventor： Jong Hann Chow ,  Malcolm Bruce Gray ,  Ian Charles Murray Littler ,  David Ernest McClelland

IPC: G01N21/00

CPC classification number: G01M11/005 ,  G01J3/433 ,  G01N21/39 ,  G01N2021/391 ,  H01S3/1392 ,  H01S3/1398

Abstract: A system and method for spectroscopic detection of a loss in a resonator cavity. The system comprises: a tunable laser source for generating a laser beam; a frequency locking system for either locking the frequency of the laser beam to a resonance of the resonator cavity or locking the length of the cavity to the frequency of the laser beam; a first modulation element for modulating the laser beam at a first modulation frequency to generate a modulated laser beam; an input coupler adapted for directing the modulated laser beam into the resonator cavity; a first directing element for directing a first portion of light reflected from the input coupler to a first photodetector to generate a first detected signal; and a first demodulator capable of demodulating the first modulation signal from the first detected signal to generate a first error signal which is a function of the loss in the resonator cavity.

Abstract translation: 用于光谱检测谐振器腔中的损耗的系统和方法。 该系统包括：用于产生激光束的可调激光源; 频率锁定系统，用于将激光束的频率锁定到谐振器腔的谐振或将腔的长度锁定到激光束的频率; 第一调制元件，用于以第一调制频率调制激光束以产生调制的激光束; 适于将调制的激光束引导到谐振腔中的输入耦合器; 用于将从所述输入耦合器反射的第一部分光引导到第一光电检测器以产生第一检测信号的第一引导元件; 以及第一解调器，其能够从第一检测信号解调第一调制信号，以产生作为谐振器腔中的损耗的函数的第一误差信号。