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首页> 外文会议>Photonics, Devices, and Systems III >Semiconductor photon counter and microlaser based system for water pollution remote sensing by laser induced fluorescence
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Semiconductor photon counter and microlaser based system for water pollution remote sensing by laser induced fluorescence

机译：基于半导体光子计数器和微激光器的激光诱导荧光水污染遥感系统

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摘要

The Laser Induced Fluorescence is a well-known and established analytical technique. We are reporting on the research and development of the remote sensing technique for water pollution of the organic pollutants dissolved in the water or flowing on the water level. The recent development in diode pumped compact micro lasers, solid state photon counters and fast timing electronics opens quite new application possibilities. We are relying on the diode pumped Nd:YAG microlaser, passively Q-switched and frequency doubled. It provides pulse energy exceeding 100 nJ in 600 ps long pulses at 532 nm with the repetition rate of 10 kHz within a compact, small and low power package. The fluorescence signal is detected by the customized silicon photon counting detector. The compact time-to-digital converter with 20 ps timing resolution and a personal computer interface has been constructed for the device. The small receiving optics apertures together with advanced time gating of the detected signal permits to operate in an outdoor environment in daylight background conditions with acceptable signal to noise ratio. The first measurement results, the capabilities of the technique in the environmental monitoring along with the device construction will be presented.
机译：激光诱导荧光是一种众所周知的成熟分析技术。我们正在报道遥感技术的研究和开发，该技术用于溶解在水中或在水位上流动的有机污染物的水污染。二极管泵浦的紧凑型微型激光器，固态光子计数器和快速定时电子器件的最新发展开辟了相当新的应用可能性。我们依靠的是二极管泵浦的Nd：YAG微激光器，它是被动调Q开关和两倍频率的。它在紧凑，小巧，低功耗的封装中，在532 nm的600 ps长脉冲中提供了超过100 nJ的脉冲能量，重复频率为10 kHz。荧光信号由定制的硅光子计数检测器检测。为该器件构建了具有20 ps定时分辨率和个人计算机接口的紧凑型时间数字转换器。较小的接收光学元件孔径以及检测到的信号的提前时间选通功能允许在室外环境中在日光背景条件下以可接受的信噪比工作。将介绍第一个测量结果，该技术在环境监测中的功能以及设备的构造。

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