Journal
APPLIED PHYSICS B-LASERS AND OPTICS
Volume 117, Issue 2, Pages 723-730Publisher
SPRINGER
DOI: 10.1007/s00340-014-5887-x
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Funding
- Ministry of Education, Culture, Sports, Science and Technology of Japan
- Japan Society for the Promotion of Science (JSPS) KAKENHI Grant [23245017, 26220804]
- Steel Industry Foundation for the Advancement of Environmental Protection Technology
- Grants-in-Aid for Scientific Research [26220806] Funding Source: KAKEN
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Four-wave Raman mixing (FWRM) in molecular hydrogen was studied using chirped pump and Stokes pulses emitting at 802 and 1,203 nm, respectively. The group delay dispersion (GDD) of the anti-Stokes pulse was examined employing a frequency-resolved optical gating system at different GDDs of the pump and Stokes pulses (0 or +/- 1,000 fs(2)). As a result, the energy and the sign of GDD for the anti-Stokes pulse remained unchanged, when the pump and Stokes pulses had the GDD with the same sign. When the sign was not the same, the energy decreased and only the portion useful for resonant FWRM was converted into a Raman emission. This technique has a potential for use in compensation of dispersion by passing the negatively chirped high-order Raman sidebands through the optics with positive chirps in the spectral region from the deep-ultraviolet to the near-infrared, to generate multiple transform-limited Raman pulses and then to produce an ultrashort optical pulse by a Fourier synthesis of these Raman emissions.
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