Тип публикации: статья из журнала
Год издания: 2014
Идентификатор DOI: 10.1070/QE2014v044n06ABEH015431
Ключевые слова: Atmosphere, Elastic scattering, Lidar, Multi-frequency sensing, Raman scattering, Spectrum, Supercontinuum, Ultrashort pulses, Earth atmosphere, Electromagnetic pulse, Nitrogen, Optical radar, Fundamental harmonic, Multi frequency, Nitrogen molecule, Positive systems, Second harmonics, Super continuum, Ti: Sapphire laser
Аннотация: We present the results of sensing of the atmosphere in the condition of a transition 'continent - ocean' zone by means of gigawatt femtosecond pulses of the fundamental and second harmonics of a Ti: sapphire laser. In the regime of multi-frequency sensing (supercontinuum from the fundamental harmonic) the emission lines of the firsПоказать полностьюt positive system of the nitrogen molecule B 3? g - A3?u + have been recorded, while the sensing using of the second harmonic have revealed the possibility of detecting the lines of Raman scattering of nitrogen (?= 441 nm). The intensity ratio of the line of Raman scattering of nitrogen and the line of elastic scattering at the wavelength of l?= 400 nm amounts to 5.6 ? 10-4. © 2014 Kvantovaya Elektronika and Turpion Ltd.
Журнал: Quantum Electronics
Выпуск журнала: Vol. 44, Is. 6
Номера страниц: 563-569