Nanosecond transient absorption spectrophotometer with dye laser probe and computer control

J. Jasny; Jerzy Sepiol; J. Karpiuk; J. Gilewski

doi:10.1117/12.155656

24 September 1993 Nanosecond transient absorption spectrophotometer with dye laser probe and computer control

J. Jasny, Jerzy Sepiol, J. Karpiuk, J. Gilewski

Proceedings Volume 1711, High-Performance Optical Spectrometry; (1993) https://doi.org/10.1117/12.155656
Event: High Performance Optical Spectrometry, 1992, Warsaw, Poland

Abstract

Computer controlled apparatus for laser flash spectroscopy has been constructed. Nitrogen laser (energy 1 inJ, pulse width 1 ns) is used both for excitation of the sample and for pumping the tunable dye laser which serves as a source of monitoring light. Two different scans are possible: (i) a mode with a fixed wavelength of the inonitoring light - the temporal evolution of the transient absorption in the range from -2 ns up to 100 ns can be observed by changing the length of the variable self-compensating optical delay line, (ii) a mode with a fixed time delay - the corresponding transient absorption in the range 380 - 800 nm can be measured. For illustration, time evolution of transient absorption and time resolved spectra of benzanthracene in ethanol are reported.

Citation Download Citation

J. Jasny, Jerzy Sepiol, J. Karpiuk, and J. Gilewski "Nanosecond transient absorption spectrophotometer with dye laser probe and computer control", Proc. SPIE 1711, High-Performance Optical Spectrometry, (24 September 1993); https://doi.org/10.1117/12.155656

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