Semiconductor lasers and solid-state emitters as near-infrared light sources for photoacoustic spectroscopy
Semiconductor lasers and solid-state emitters as near-infrared light sources for photoacoustic spectroscopy
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半导体激光器和固态发射器作为光声光谱的近红外光源
DOI：
10.1021/ac00259a053
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发表时间：
1983
影响因子：
7.4
通讯作者：
N. Ishibashi
中科院分区：
文献类型：
--
作者：
Y. Kawabata;T. Kamikubo;T. Imasaka;N. Ishibashi
先生：激光由于其作为光源的巨大优势，在光谱学方面开辟了一个新的领域。它们作为分析工具是非常有用的，但它们的复杂性和昂贵性不允许它们在化学仪器中的常规和实际使用。近来，半导体激光器已经高度发展，用于诸如将信息传送到视频盘/从视频盘传送信息的应用中。半导体激光器与其他激光光源一样，具有光束相干性好、线宽窄的特点，而且体积小、结构紧凑。输出功率为5 mW的半导体激光器现在可以以大约100美元的价格在市场上买到。值得注意的是，a.由相关技术生产的固态发射器具有类似的性能，尽管其具有相对较差的光束和光谱质量，但是以较低的价格具有较大的输出功率。这些半导体激光器和固态发射器可以被电子调制到40 MHz（固态发射器）或200 MHz（半导体激光器），而不会损失（有时增加）其平均功率，并且可以常规地用于光谱测定。在这项研究中，我们希望提出其潜在的分析优势，用于测定磷的光声光谱（PAS）。
Sir: Lasers have opened up a frontier in spectrometry because of their great advantages as light sources. They are very useful as analytical tools, but their complexity and ex-pensiveness do not allow their conventional and practical use in a commerical instrument. Recently the semiconductor laser has been highly developed for the use in applications such as transferring information into/out of a video disk. The sem-iconductor laser has good beam coherence and narrow line width like other laser sources, and it is very small and compact. The semiconductor laser with an output power of 5 mW is now commercially available at a price of about $100. It is noted that a. solid-state emitter produced by related technology has similar performance though it has a relatively poorerbeam and spectral qualities but has a larger output power at a lower price. These semiconductor lasers and solid-state emitters can be electronically modulated up to 40 MHz (solid-state emitter) or 200 MHz (semiconductor laser) without losing (sometimes increasing) its average power and can be con-ventionally used for spectrometry. In this study we wish to present their potential analytical advantages for use in de-termination of phosphorus by photoacoustic spectroscopy (PAS).