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Power-area method to precisely estimate laser linewidth from its frequency-noise spectrum

机译:功率区方法,可从其频率噪声频谱中精确估计激光线宽

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We proposed a precise and simple method to estimate the laser linewidth from its frequency power spectral density, which is termed as power-area method (PAM). We applied this method to determine the full width at half-maximum (FWHM) of white-frequency noise and flicker-frequency noise, and the error was less than 7%. Then we successfully estimated the FWHM of the beat note of delayed self-homodyne/heterodyne interferometry with this method. Lastly we investigated the selection of loop gain and loop bandwidth using PAM to achieve a better result in linewidth compression with servo-loop control. (C) 2015 Optical Society of America
机译:我们提出了一种精确而简单的方法,根据其功率频谱密度来估算激光线宽,这被称为功率区域法(PAM)。我们用这种方法确定了白频噪声和闪频噪声的半峰全宽(FWHM),误差小于7%。然后,我们成功地用这种方法估计了延迟自同调/外差干涉法的节拍音符的FWHM。最后,我们研究了使用PAM选择环路增益和环路带宽的方法,以在采用伺服环路控制的线宽压缩中获得更好的结果。 (C)2015年美国眼镜学会

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