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Steady-state and transient ultraviolet resonance Raman spectrometer for the 193-270 nm spectral region

Bykov, S and Lednev, I and Iianoul, A and Mikhonin, A and Munro, C and Asher, SA (2005) Steady-state and transient ultraviolet resonance Raman spectrometer for the 193-270 nm spectral region. Applied Spectroscopy, 59 (12). 1541 - 1552. ISSN 0003-7028

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Abstract

We describe a state-of-the-art tunable ultraviolet (UV) Raman spectrometer for the 193-270 nm spectral region. This instrument allows for steady-state and transient UV Raman measurements. We utilize a 5 kHz Ti-sapphire continuously tunable laser (∼20 ns pulse width) between 193 nm and 240 nm for steady-state measurements. For transient Raman measurements we utilize one Coherent Infinity YAG laser to generate nanosecond infrared (IR) pump laser pulses to generate a temperature jump (T-jump) and a second Coherent Infinity YAG laser that is frequency tripled and Raman shifted into the deep UV (204 nm) for transient UV Raman excitation. Numerous other UV excitation frequencies can be utilized for selective excitation of chromophoric groups for transient Raman measurements. We constructed a subtractive dispersion double monochromator to minimize stray light. We utilize a new charge-coupled device (CCD) camera that responds efficiently to UV light, as opposed to the previous CCD and photodiode detectors, which required intensifiers for detecting UV light. For the T-jump measurements we use a second camera to simultaneously acquire the Raman spectra of the water stretching bands (2500-4000 cm-1) whose band-shape and frequency report the sample temperature. © 2005 Society for Applied Spectroscopy.


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Details

Item Type: Article
Status: Published
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Bykov, S
Lednev, I
Iianoul, A
Mikhonin, A
Munro, C
Asher, SAasher@pitt.eduASHER
Date: 1 December 2005
Date Type: Publication
Journal or Publication Title: Applied Spectroscopy
Volume: 59
Number: 12
Page Range: 1541 - 1552
DOI or Unique Handle: 10.1366/000370205775142511
Schools and Programs: Dietrich School of Arts and Sciences > Chemistry
Refereed: Yes
ISSN: 0003-7028
MeSH Headings: Animals; Equipment Design; Equipment Failure Analysis; Horses; Kinetics; Metmyoglobin--analysis; Myocardium--metabolism; Reproducibility of Results; Sensitivity and Specificity; Spectrophotometry, Ultraviolet--instrumentation; Spectrophotometry, Ultraviolet--methods; Spectrum Analysis, Raman--instrumentation; Spectrum Analysis, Raman--methods
PubMed ID: 16390595
Date Deposited: 08 Feb 2013 21:12
Last Modified: 02 Feb 2019 16:55
URI: http://d-scholarship.pitt.edu/id/eprint/17213

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