Coherent anti-Stokes Raman scattering and normal anti-Stokes Raman scattering due to LO phonons in GaP using cw diode lasers
| Autor: | Dennis L. Polla, Roshan L. Aggarwal, L. W. Farrar |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Physics
business.industry Physics::Optics General Chemistry Laser pumping Condensed Matter Physics Laser law.invention Laser linewidth symbols.namesake X-ray Raman scattering Optics law Materials Chemistry symbols Continuous wave Coherent anti-Stokes Raman spectroscopy Raman spectroscopy business Raman scattering |
| Zdroj: | Solid State Communications. 151:1367-1370 |
| ISSN: | 0038-1098 |
| Popis: | a b s t r a c t Coherent anti-Stokes Raman scattering (CARS) and normal anti-Stokes Raman scattering (NARS) have been measured in (001) GaP at room temperature due to the 403 cm − 1 LO phonons using a continuous wave (CW) 785.0 nm fixed-wavelength pump laser and a CW Stokes laser tunable in the 800-830 nm wavelength range. CARS measurements are normally made using pulsed lasers. The use of CW diode lasers allows a more accurate comparison between the measured and calculated values of the CARS signal. The pump and Stokes laser beams were linearly polarized perpendicular to each other, same as the pump and normal Stokes/anti-Stokes scattered light for the GaP sample used in this work. The pump and Stokes laser powers incident upon the GaP sample, located in the focal plane of a 20 mm effective focal length lens, were |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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