Precise measurement of laser power using an optomechanical system.
Precise measurement of laser power using an optomechanical system.
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DOI：
10.1364/oe.22.002013
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发表时间：
2013-09
期刊：
影响因子：
3.8
通讯作者：
K. Agatsuma;D. Friedrich;S. Ballmer;Giulia DeSalvo;S. Sakata;E. Nishida;S. Kawamura
中科院分区：
文献类型：
--
作者：
K. Agatsuma;D. Friedrich;S. Ballmer;Giulia DeSalvo;S. Sakata;E. Nishida;S. Kawamura
提出了一种利用光机系统精确测量激光功率的新方法。通过测量由振幅调制激光束的反射引起的反射镜位移，可以精确地测量入射连续波激光中的光子数。我们已经证明了这一原则，通过一个原型实验使用一个悬挂的25毫克镜作为机械振荡器耦合的辐射压力和迈克尔逊干涉仪作为位移传感器。激光功率测量的不确定度小于百分之一（1σ）是可以实现的。
This paper shows a novel method to precisely measure the laser power using an optomechanical system. By measuring a mirror displacement caused by the reflection of an amplitude modulated laser beam, the number of photons in the incident continuous-wave laser can be precisely measured. We have demonstrated this principle by means of a prototype experiment uses a suspended 25 mg mirror as an mechanical oscillator coupled with the radiation pressure and a Michelson interferometer as the displacement sensor. A measurement of the laser power with an uncertainty of less than one percent (1σ) is achievable.