A narrow-band wavelength-tunable laser system delivering high-energy 300 ps pulses in the near-infrared

Year: 2003

Authors: Brandi F., Velchev I., Neshev D., Hogervorst W., Ubachs W.

Autors Affiliation: Laser Centre, Department of Physics and Astronomy, Vrije Universiteit, De Boelelaan 1081, 1081 HV Amsterdam, Netherlands

Abstract: We report on the operation of a novel laser system delivering high-energy pulses in the near-infrared region. The pulses are nearly Fourier-transform limited (time-bandwidth product of 0.48), providing narrow-band radiation (similar to1.5 GHz), with an energy of 225 mJ and 10 Hz repetition rate. The pulse duration of 320 ps covers the intermediate region between Q-switched and mode-locked lasers, and provides high peak powers. The nearly Gaussian beam profile, with a beam quality factor of M-2=2.5, enables tight focusing, reaching intensities exceeding 5×10(13) W/cm(2). The system operation is demonstrated near 780 nm, however, the tunability extends over the range 700-970 nm. The laser system is suitable for high-order harmonic generation in the extreme-ultraviolet region for high-resolution frequency domain spectroscopy.

Journal/Review: REVIEW OF SCIENTIFIC INSTRUMENTS

Volume: 74 (1 (P.1))      Pages from: 32  to: 37

KeyWords: FEEDBACK DYE-LASER; HARMONIC-GENERATION; NM; SPECTROSCOPY; BANDWIDTH; INTENSITY; DYNAMICS

DOI: 10.1063/1.1524714

Citations: 16
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