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Title: Femtosecond Chirp-Free Transient Absorption Method And Apparatus

Abstract

A method and apparatus for femtosecond transient absorption comprising phase-sensitive detection, spectral scanning and simultaneous controlling of a translation stage to obtain TA spectra information having at least a sensitivity two orders of magnitude higher than that for single-shot methods, with direct, simultaneous compensation for chirp as the data is acquired. The present invention includes a amplified delay translation stage which generates a splittable frequency-doubled laser signal at a predetermined frequency f, a controllable means for synchronously modulating one of the laser signals at a repetition rate of f/2, applying the laser signals to a material to be sample, and acquiring data from the excited sample while simultaneously controlling the controllable means for synchronously modulating.

Inventors:
 [1];  [2]
  1. (Santa Fe, NM)
  2. (White Rock, NM)
Issue Date:
Research Org.:
Los Alamos National Laboratory
OSTI Identifier:
879574
Patent Number(s):
6191861
Application Number:
09/249726
Assignee:
McBranch, Duncan W. (Santa Fe, NM); Klimov, Victor I. (White Rock, NM) OSTI
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

McBranch, Duncan W., and Klimov, Victor I. Femtosecond Chirp-Free Transient Absorption Method And Apparatus. United States: N. p., 2001. Web.
McBranch, Duncan W., & Klimov, Victor I. Femtosecond Chirp-Free Transient Absorption Method And Apparatus. United States.
McBranch, Duncan W., and Klimov, Victor I. Tue . "Femtosecond Chirp-Free Transient Absorption Method And Apparatus". United States. https://www.osti.gov/servlets/purl/879574.
@article{osti_879574,
title = {Femtosecond Chirp-Free Transient Absorption Method And Apparatus},
author = {McBranch, Duncan W. and Klimov, Victor I.},
abstractNote = {A method and apparatus for femtosecond transient absorption comprising phase-sensitive detection, spectral scanning and simultaneous controlling of a translation stage to obtain TA spectra information having at least a sensitivity two orders of magnitude higher than that for single-shot methods, with direct, simultaneous compensation for chirp as the data is acquired. The present invention includes a amplified delay translation stage which generates a splittable frequency-doubled laser signal at a predetermined frequency f, a controllable means for synchronously modulating one of the laser signals at a repetition rate of f/2, applying the laser signals to a material to be sample, and acquiring data from the excited sample while simultaneously controlling the controllable means for synchronously modulating.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {2}
}

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