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Proposal for vacuum-ultraviolet anti-Stokes Raman lasers based on the group VI elements
Optics Letters
|September 1, 2009
Summary
Metastable inversions in group VI elements could enable a new type of anti-Stokes Raman laser. This method uses selective photodissociation to create high population inversions for efficient, high-power deep-UV laser generation.
Area of Science:
- Atomic, Molecular, and Optical Physics
- Laser Science and Photonics
Background:
- Metastable inversions are crucial for laser operation.
- Group VI elements offer unique electronic structures for population inversion.
Purpose of the Study:
- To propose a novel anti-Stokes Raman laser using metastable inversions.
- To explore the potential of group VI elements as gain media.
- To achieve efficient, high-power laser generation in the deep-UV spectrum.
Main Methods:
- Theoretical proposal of using metastable inversions in the (1)S(0) state of O, S, and Se.
- Selective photodissociation of N(2)O, OCS, or OCSe using vacuum ultraviolet (VUV) wavelengths.
- Population inversion density calculations exceeding 10(16) atoms/cm(3).
Main Results:
- Demonstrated feasibility of creating high population inversions (>10(16) atoms/cm(3)) in group VI elements.
- Proposed upconversion of tunable input lasers via stimulated Raman scattering.
- Predicted efficient, high-power laser output in the 100-206 nm spectral region.
Conclusions:
- Metastable inversions in group VI elements are viable for anti-Stokes Raman lasers.
- Selective photodissociation is an effective method for generating population inversions.
- This approach promises efficient, high-power deep-UV laser sources.
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