首页> 外文会议>2nd International EUSPEN Conference on Precision Engineering Nanotechnology Vol.1, May 27th-31st, 2001, Turin, Italy >Modulation-free stabilised diode laser for interferometry using Doppler-reduced Rb transitions
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Modulation-free stabilised diode laser for interferometry using Doppler-reduced Rb transitions

机译:使用多普勒减少的Rb跃迁的用于干涉测量的免调制稳定二极管激光器

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We developed compact low cost frequency stabilised diode lasers with an output power of > 20 mW emitting at 780 nm. Extended cavity set-ups in Littrow-configuration are used to increase the short-time stability of the laser diodes and frequency stabilisation to Doppler-reduced saturated Rb-transitions improve the long-time stability. A modulation-free stabilisation scheme is realised using polarisation-optical differential detection of the saturated Rb-absorption lines. This system achieves a relative frequency uncertainty of δν/ν < 1 * 10~(-9). As a reference system a second system was set up using a frequency modulation of the laser emission and the standard 3f-detection for the frequency stabilisation to saturated Rb-lines. The FM-system achieves a relative frequency uncertainty of (δv/v)<3.10~(-10).
机译:我们开发了紧凑的低成本频率稳定二极管激光器,其输出功率在780 nm处发射> 20 mW。 Littrow配置中扩展的腔设置可用于增加激光二极管的短时稳定性,而多普勒降低的饱和Rb跃迁的频率稳定性可提高长期稳定性。使用饱和Rb吸收线的偏振光差分检测可以实现无调制稳定方案。该系统的相对频率不确定度为δν/ν<1 * 10〜(-9)。作为参考系统,使用激光发射的频率调制和用于稳定Rb线的频率的标准3f检测建立了第二个系统。调频系统的相对频率不确定度为(δv/ v)<3.10〜(-10)。

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