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浏览/检索结果: 共2条，第1-2条 帮助 已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择发表日期升序发表日期降序提交时间升序提交时间降序题名升序题名降序作者升序作者降序 Resonant photoacoustic spectrometer enhanced by multipass absorption for detecting atmospheric CH4 at the ppb-level 期刊论文 FRONTIERS IN CHEMISTRY, 2022, 卷号: 10 作者:  Liu, Qiang;  Sun, Yi;  Qiu, Xuanbing;  Guo, Guqing;  Li, Lin 收藏  |  浏览/下载：20/0  |  提交时间：2022/12/22 photoacoustic spectroscopy (PA)  herriott-type  multipass enhancement  wavelength modulation spectroscopy (laser spectroscopy)  atmospheric CH4 detection   Research on the enhancement of signal-to-noise ratio by radio frequency white noise in compact dense-pattern multipass cell for trace gas detection 期刊论文 MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, 2022 作者:  Tian, Xing;  Cheng, Gang;  Chen, Jiajin;  Liu, Kun 收藏  |  浏览/下载：44/0  |  提交时间：2022/03/21 minimum detectable concentration  optical interference  radio frequency bandwidth-limited white noise  signal-to-noise ratio