Издательство: | Книга по требованию |
Дата выхода: | июль 2011 |
ISBN: | 978-6-1334-4735-6 |
Объём: | 104 страниц |
Масса: | 178 г |
Размеры(В x Ш x Т), см: | 23 x 16 x 1 |
High Quality Content by WIKIPEDIA articles! The Raman laser is a byproduct of Raman scattering, discovered in 1928 by Nobel laureate Chandrasekhara Venkata Raman and Kariamanickam Srinivasa Krishnan in liquids and independently by Grigory Landsberg and Leonid Mandelshtam in crystals. When light hits a substance, it causes the atoms in the substance to vibrate sympathetically. The collision of photons with the substance causes some of the photons to gain or lose energy, resulting in a secondary light of a different wavelength. A Raman laser takes this secondary light and amplifies it by reflecting it and pumping energy into the system to emit a coherent laser beam. The most significant difference between a Raman laser and a standard laser is the absence of population inversion in a Raman laser.
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