Title :
Generation of 1-GW, 1-kHz femtosecond mid-infrared laser pulses
Author :
Wang, J.-K. ; Franken, J.
Author_Institution :
Center for Condensed Matter Sci., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
Summary form only given. There have been several endeavors to generate high-power ultrafast infrared pulses with an optical parametric amplifier (OPA). For example, 11 /spl mu/J of 200-fs pulses were generated in the 2.5-4.4-/spl mu/m range in KTP by Gale et al. We generate 140 pulses with as much as 120 /spl mu/J of energy per pulse in the 2.8 to 41 /spl mu/m region, representing, to our knowledge, the highest IR pulse energy generated from a 1-kHz femtosecond laser system. KTP and KTA are employed in our OPA system. They are cut for type II phasematching. The femtosecond laser system used in pumping the OPA system consists of a femtosecond Ti:sapphire regenerative amplifier generating 1 kHz 3 mJ, and ca. 110-fs pulses.
Keywords :
laser beams; optical materials; optical parametric amplifiers; optical phase matching; optical pulse generation; optical pumping; potassium compounds; titanium compounds; 1 GW; 1 kHz; 110 fs; 120 muJ; 2.8 to 4.1 mum; 3 mJ; Al/sub 2/O/sub 3/:Ti; IR pulse energy; KTP; KTiOAsO/sub 4/; KTiOPO/sub 4/; KTiOPO4; femtosecond Ti:sapphire regenerative amplifier; femtosecond laser system; femtosecond mid-infrared laser pulses; high-power ultrafast infrared pulses; optical parametric amplifier; pumping; type II phasematching; Laser beam cutting; Nonlinear optics; Optical amplifiers; Optical pulse generation; Optical pumping; Pulse amplifiers; Pump lasers; Semiconductor optical amplifiers; Stimulated emission; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics, 2000. (CLEO 2000). Conference on
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
1-55752-634-6
DOI :
10.1109/CLEO.2000.907224
