Title :
Influence of the chirp and repetition rate of ultrashort laser pulses on the Kα yield from laser-produced plasmas
Author :
Silies, Martin ; Witte, Henrik ; Haarlammert, Thorben ; Linden, Steffen ; Zacharias, Helmut
Author_Institution :
Munster Univ., Munster
Abstract :
In the present work the hard X-ray yield is measured while varying the chirp of irradiating laser pulse. The radiation of a Ti:sapphire CPA laser system (29 fs, 750 μJ, 1 kHz) is focussed onto an iron containing solid state target producing Bremsstrahlung as well as target-specific Kα and Kβ lines. The hard X-ray yield has been optimized by introducing negative and positive group delay dispersion (GDD) and third order dispersion (TOD) to the femtosecond laser pulse.
Keywords :
X-ray production; chirp modulation; high-speed optical techniques; plasma production by laser; sapphire; solid lasers; titanium; CPA laser system; energy 750 μJ; femtosecond laser pulse; hard X-ray yield; laser chirp; laser pulse irradiation; laser repetition rate; laser-produced plasma; negative group delay dispersion; positive group delay dispersion; solid state target; target-specific Kα lines; target-specific Kβ lines; third order dispersion; time 29 fs; ultrashort laser pulses; Acoustic pulses; Chirp; Iron; Laser theory; Optical pulse generation; Optical pulses; Plasma x-ray sources; Pulse amplifiers; Pulse measurements; X-ray lasers;
Conference_Titel :
Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007. European Conference on
Conference_Location :
Munich
Print_ISBN :
978-1-4244-0930-3
Electronic_ISBN :
978-1-4244-0931-0
DOI :
10.1109/CLEOE-IQEC.2007.4386375
