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Title: Long-wave infrared picosecond parametric amplifier based on Raman shifter technology

Abstract

A new method for a long-wave infrared (LWIR), picosecond difference frequency generation (DFG) source using one near-infrared laser and a Raman shifter is experimentally tested and characterized. The signal seed for DFG is a Stokes pulse generated via transient stimulated Raman scattering in a nonlinear medium with a Raman frequency in the 2–20 µm range. A study of the dynamics of the transient Raman regime in liquid C6D6 has shown that the efficiency of Stokes production can be increased and the central wavelength can be controlled by chirping the pump pulse in order to compensate for chirping caused by self-phase modulation. High energy, ≥3 µJ, picosecond pulses at 10.6 µm have been generated in a GaSe crystal pumped by 1 mJ pulses of 1060 nm light from a Nd:glass laser.

Authors:
; ; ;
Publication Date:
Research Org.:
Univ. of California, Davis, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1421900
Alternate Identifier(s):
OSTI ID: 1506445
Grant/Contract Number:  
SC001006; SC0010064
Resource Type:
Published Article
Journal Name:
Optics Express
Additional Journal Information:
Journal Name: Optics Express Journal Volume: 26 Journal Issue: 5; Journal ID: ISSN 1094-4087
Publisher:
Optical Society of America
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Nonlinear optics, parametric processes; Raman effect; Infrared and far-infrared lasers

Citation Formats

Welch, E. C., Tochitsky, S. Ya., Pigeon, J. J., and Joshi, C. Long-wave infrared picosecond parametric amplifier based on Raman shifter technology. United States: N. p., 2018. Web. https://doi.org/10.1364/OE.26.005154.
Welch, E. C., Tochitsky, S. Ya., Pigeon, J. J., & Joshi, C. Long-wave infrared picosecond parametric amplifier based on Raman shifter technology. United States. https://doi.org/10.1364/OE.26.005154
Welch, E. C., Tochitsky, S. Ya., Pigeon, J. J., and Joshi, C. Tue . "Long-wave infrared picosecond parametric amplifier based on Raman shifter technology". United States. https://doi.org/10.1364/OE.26.005154.
@article{osti_1421900,
title = {Long-wave infrared picosecond parametric amplifier based on Raman shifter technology},
author = {Welch, E. C. and Tochitsky, S. Ya. and Pigeon, J. J. and Joshi, C.},
abstractNote = {A new method for a long-wave infrared (LWIR), picosecond difference frequency generation (DFG) source using one near-infrared laser and a Raman shifter is experimentally tested and characterized. The signal seed for DFG is a Stokes pulse generated via transient stimulated Raman scattering in a nonlinear medium with a Raman frequency in the 2–20 µm range. A study of the dynamics of the transient Raman regime in liquid C6D6 has shown that the efficiency of Stokes production can be increased and the central wavelength can be controlled by chirping the pump pulse in order to compensate for chirping caused by self-phase modulation. High energy, ≥3 µJ, picosecond pulses at 10.6 µm have been generated in a GaSe crystal pumped by 1 mJ pulses of 1060 nm light from a Nd:glass laser.},
doi = {10.1364/OE.26.005154},
journal = {Optics Express},
number = 5,
volume = 26,
place = {United States},
year = {2018},
month = {2}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1364/OE.26.005154

Figures / Tables:

Fig. 1 Fig. 1: Energy diagram (left) of pump laser ωL exciting a Raman medium and being down-shifted by the Raman frequency ΩR to produce ωStokes = ωL −ΩR. Block diagram (right) describing the three wave mixing scheme for efficient down-conversion to LWIR wavelengths from a near-IR laser (~1 µm). The outputmore » frequency is equal to the Raman frequency of the Raman shifter material.« less

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Works referenced in this record:

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    Works referencing / citing this record:

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      Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.