Influence of grating parameters on the linewidths of external-cavity diode lasers.
Influence of grating parameters on the linewidths of external-cavity diode lasers.
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DOI：
10.1364/ao.45.009191
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发表时间：
2006-12
期刊：
影响因子：
1.9
通讯作者：
H. Loh;Yu-ju Lin;I. Teper;M. Cetina;Jonathan Simon;J. K. Thompson;V. Vuletić
中科院分区：
文献类型：
--
作者：
H. Loh;Yu-ju Lin;I. Teper;M. Cetina;Jonathan Simon;J. K. Thompson;V. Vuletić
实验研究了光栅反射率、光栅分辨率和二极管面增透（AR）涂层对Littrow结构衍射光栅外腔二极管激光器本征线宽的影响。通过测量399,780和852 nm的光栅激光器的频率噪声功率谱密度，确定其典型线宽在250和600khz之间。线宽受二极管表面存在AR涂层的影响不大，但随着光栅反射率和光栅分辨率的增加而变窄，其中分辨率的影响更大。我们还使用频率噪声测量来表征具有改进的机械稳定性的激光支架。
We investigate experimentally the influence of the grating reflectivity, grating resolution, and diode facet antireflection (AR) coating on the intrinsic linewidth of an external-cavity diode laser built with a diffraction grating in a Littrow configuration. Grating lasers at 399, 780, and 852 nm are determined to have typical linewidths between 250 and 600 kHz from measurements of their frequency noise power spectral densities. The linewidths are little affected by the presence of an AR coating on the diode facet but narrow as the grating reflectivity and grating resolution are increased, with the resolution exerting a greater effect. We also use frequency noise measurements to characterize a laser mount with improved mechanical stability.