首页> 外文期刊>Optics Letters >Suppression of intensity modulation contributions to signals in second harmonic wavelength modulation spectroscopy
【24h】

Suppression of intensity modulation contributions to signals in second harmonic wavelength modulation spectroscopy

机译:在二次谐波波长调制光谱中抑制强度调制对信号的贡献

获取原文
获取原文并翻译 | 示例
           

摘要

Recovery of the full 2f wavelength modulation spectroscopy (WMS) signal in isolation from the 2f residual amplitude modulation (RAM) due to nonlinear intensity modulation (IM) and distortion due to linear IM is demonstrated. The 2f RAM is eliminated using a fiber delay line, while the linear IM-induced distortion is eliminated by a phasor decomposition approach. This generic and robust two-pronged strategy removes the need to separately measure the 2f RAM in high-modulation-index calibration-free 2f WMS. It is also important for widely tunable 2f WMS using nontelecom diode lasers with highly nonlinear characteristics leading to high-2f RAM levels.
机译:演示了由于非线性强度调制(IM)和线性IM导致的失真,与2f残余振幅调制(RAM)隔离的完整2f波长调制光谱(WMS)信号的恢复。使用光纤延迟线可以消除2f RAM,而通过相量分解方法可以消除线性IM引起的失真。这种通用且稳健的两管齐下的策略消除了在无需高调制指数的2f WMS中分别测量2f RAM的需求。对于使用具有高度非线性特性导致2f RAM电平高的非电信二极管激光器的广泛可调2f WMS,这也很重要。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号