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首页> 外文会议>Conference on Optical Design and Engineering; Sep 30-Oct 3, 2003; St.Etienne, France >A highly stable frequency stabilized extended cavity diode laser for space
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A highly stable frequency stabilized extended cavity diode laser for space

机译：用于空间的高度稳定的频率稳定型扩展腔二极管激光器

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摘要

EADS SODERN is developing a compact highly stable near infrared laser dedicated to a space cold atom clock (PHARAO program supported by the CNES). The laser is based on an extended cavity diode laser (ECDL). We will present the design, preliminary performances and the environment behaviour of this ECDL. The ECDL is spectrally tuned with an intra-cavity Fabry-Perot filter. It emits 30mW laser power at a wavelength of 852nm with a line-width around 100kHz. The laser frequency is servo-locked on a saturated absorption line of a cesium vapour. It provides a relative frequency accuracy of 3x10~(-9) and a frequency noise spectral density lower than 10_4Hz_2/Hz in the range 100Hz to 1kHz. An acousto-optic modulator enables a fast and accurate tuning of the laser frequency, over a 80MHz range, with a rising time of 200GHz/s. According to the results of the mock-up, the flight model under development is expected to be the most accurate and stable laser for space. Beyond the intended application of space-based cold atom clock, such a stabilized laser could also be a key element for future on-board instruments such as space interferometers or space LIDAR, for which a highly stable optical frequency standard is required.
机译：EADS SODERN正在开发一种紧凑的高度稳定的近红外激光，专用于空间冷原子钟（CNES支持的PHARAO程序）。该激光器基于扩展腔二极管激光器（ECDL）。我们将介绍此ECDL的设计，初步性能和环境行为。使用腔内法布里-珀罗滤波器对ECDL进行频谱调谐。它以852nm的波长发射30mW的激光功率，线宽约为100kHz。激光频率被伺服锁定在铯蒸气的饱和吸收线上。它具有3x10〜（-9）的相对频率精度，并且在100Hz至1kHz范围内的频率噪声频谱密度低于10_4Hz_2 / Hz。声光调制器可在80MHz范围内快速准确地调整激光频率，上升时间为200GHz / s。根据模型的结果，正在开发的飞行模型有望成为最精确，稳定的太空激光器。除了天基冷原子钟的预期应用之外，这种稳定的激光器也可能是未来机载仪器（如空间干涉仪或太空LIDAR）的关键元件，这些仪器需要高度稳定的光频率标准。

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