PULSED-LASER EXCITED DIFFERENTIAL PHOTOTHERMAL DEFLECTION SPECTROSCOPY

被引：7

作者：

BIALKOWSKI, SE ^{[1
]}

GU, XY ^{[1
]}

POSTON, PE ^{[1
]}

POWERS, LS ^{[1
]}

机构：

[1] UTAH STATE UNIV,NATL CTR DESIGN MOLEC FUNCT,LOGAN,UT 84322

来源：

APPLIED SPECTROSCOPY | 1992年 / 46卷 / 09期

关键词：

INSTRUMENTATION; PHOTOTHERMAL SPECTROSCOPY; LASERS; VISIBLE; OPTICS;

D O I：

10.1366/0003702924123845

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

This paper describes a differential photothermal optical absorbance apparatus that uses two excitation beams at different wavelengths. A single probe beam monitors the difference in heats generated by the two wavelengths. The theory is developed for the operational principles of the apparatus, and theoretical signals are compared with those obtained with a conventional absorption spectrophotometer. The differential photothermal apparatus has a theoretical advantage over conventional spectrophotometry for samples with less than unit absorbance. Experiments are described which verify the operating principles and demonstrate the flexibility of the apparatus.

引用

页码：1335 / 1345

页数：11

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