Document Detail


Polarization sensitive ultrafast mid-IR pump probe micro-spectrometer with diffraction limited spatial resolution.
MedLine Citation:
PMID:  23571925     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
A setup of ultrafast transient infrared IR spectrometer is described in this paper that employed Schwarzschild objectives to focus the probe beam to a diffraction limited spot. Thus measurements were performed with very high spatial resolution in the mid-IR spectral region. Furthermore, modulating the polarization of the probe light enabled detecting transient dichroism of the sample. These capabilities of the setup were applied to study transient absorption of Photosystem II core complex and to image an organized film of methylene blue chloride dye. Moreover, a study of noise sources in a pump probe measurement is presented. The predicted noise level of the current setup was 8.25 μOD in 10<sup>4</sup> acquisitions and compared very well with the experimental observation of 9.6 μOD.
Authors:
M Kaucikas; J Barber; J J Van Thor
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Optics express     Volume:  21     ISSN:  1094-4087     ISO Abbreviation:  Opt Express     Publication Date:  2013 Apr 
Date Detail:
Created Date:  2013-04-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101137103     Medline TA:  Opt Express     Country:  United States    
Other Details:
Languages:  eng     Pagination:  8357-70     Citation Subset:  IM    
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