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Efficient Raman conversion of XeCl-laser radiation in metal vapors
Optics Letters
|August 18, 2009
Summary
Researchers converted laser output to visible wavelengths using stimulated electronic Raman scattering in metal vapors. High energy-conversion efficiencies up to 40% were achieved, demonstrating a promising technique for tunable visible light generation.
Area of Science:
- Laser Physics
- Nonlinear Optics
- Atomic and Molecular Physics
Background:
- Discharge-pumped excimer lasers, such as Xenon Chloride (XeCl), are powerful sources of ultraviolet radiation.
- Stimulated electronic Raman scattering (SERS) is a nonlinear optical process that can shift laser frequencies.
- Efficient conversion of UV laser light to the visible spectrum is desirable for various applications.
Purpose of the Study:
- To investigate the conversion of XeCl laser output to visible wavelengths.
- To explore the use of stimulated electronic Raman scattering in metal vapors for frequency conversion.
- To determine the energy-conversion efficiencies achievable with this method.
Main Methods:
- Utilized a discharge-pumped XeCl laser operating at 308 nm (75 mJ, 25 nsec FWHM).
- Employed stimulated electronic Raman scattering (SERS) in metal vapors, specifically Barium (Ba), Titanium (Ti), Lead (Pb), and Bismuth (Bi).
- Measured the generated visible wavelengths and quantified energy-conversion efficiencies.
Main Results:
- Successfully converted the 308 nm XeCl laser output to multiple wavelengths in the visible spectrum.
- Observed significant energy-conversion efficiencies, reaching up to 40% in initial experiments.
- Demonstrated the feasibility of using SERS in various metal vapors for visible light generation.
Conclusions:
- Stimulated electronic Raman scattering in metal vapors is an effective method for converting XeCl laser output to the visible spectrum.
- The technique shows potential for generating tunable visible light with high energy-conversion efficiencies.
- Further research can optimize this process for practical applications requiring visible laser sources.
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