Time-resolved tunable diode laser absorption spectroscopy of pulsed plasma

0395151 - FZÚ 2014 RIV US eng J - Článek v odborném periodiku
Adámek, Petr - Olejníček, Jiří - Čada, Martin - Kment, Š. - Hubička, Zdeněk
Time-resolved tunable diode laser absorption spectroscopy of pulsed plasma.
Optics Letters. Roč. 38, č. 14 (2013), s. 2428-2430. ISSN 0146-9592. E-ISSN 1539-4794
Grant CEP: GA MŠMT LH12045; GA ČR(CZ) GAP205/11/0386; GA MŠMT LD12002; GA MŠMT LH12043
Institucionální podpora: RVO:68378271
Klíčová slova: diode lasers * plasma diagnostics * absorption spectroscopy * time resolved
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
Impakt faktor: 3.179, rok: 2013

A method for time-resolved tunable diode laser absorption spectroscopy (LAS) has been developed. In this Letter, we describe in detail a developed electronic module that controls the time resolution of the LAS system. The transistor–transistor logic signal triggering the plasma pulse is used for generation of two signals: the first one triggers fine tuning of the laser wavelength and the second one controls time-defined signal sampling from the absorption detector. The described method and electronic system enable investigation of the temporal evolution of the density and temperature of selected particles in technological plasma systems. The high-power impulse magnetron sputtering system with a period of 10 ms and a duty cycle of 1% has been used to verify this method. The temporal evolution of argon metastable density was measured in the active part of the pulse and in the afterglow.
Trvalý link: http://hdl.handle.net/11104/0223256