Picosecond stimulated Raman scattering at 3000 and 3430 cm−1 OH vibrations without optical breakdown
| Autor: | Vasily N. Lednev, A. I. Vodchits, Mikhail Ya. Grishin, Sergey M. Pershin, Valentin A. Orlovich, Pavel A. Chizhov, I. A. Khodasevich |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Physics::Optics 02 engineering and technology 01 natural sciences law.invention 010309 optics Laser linewidth symbols.namesake Optics Brillouin scattering law 0103 physical sciences Optical fiber cable business.industry Conical surface 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics Vibration Picosecond symbols Physics::Accelerator Physics Atomic physics 0210 nano-technology business Beam (structure) Raman scattering |
| Zdroj: | Optics Letters. 45:5624 |
| ISSN: | 1539-4794 0146-9592 |
| Popis: | For the first time, to the best of our knowledge, stimulated Raman scattering (SRS) of picosecond laser pulses without optical breakdown has been detected simultaneously (as the first Stokes and anti-Stokes paired components) at ∼ 3430 and ∼ 3000 c m − 1 vibrations of water OH band. These components were generated coaxially to the pump beam in the forward direction as axial and conical ring beams, respectively, when the pump beam was focused at the water-air interface. We suggest an explanation of these new SRS phenomena by non-collinear four-wave parametric interaction. |
| Databáze: | OpenAIRE |
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