Title :
Femtosecond optical parametric generation (OPG) in periodically poled stoichiometric LiTaO/sub 3/ with >1 W average power
Author :
Sudmeyer, T. ; Brunner, E. ; Paschotta, R. ; Usami, T. ; Ito, H. ; Nakamura, M. ; Kitamura, K. ; Keller, U.
Author_Institution :
Inst. of Quantum Electron., Swiss Fed. Inst. of Technol., Zurich, Switzerland
Abstract :
Summary form only given. We present a parametric generator based on the novel nonlinear material periodically poled stoichiometric LiTaO/sub 3/ (PPSLT) and a recently developed high-power femtosecond Yb:KY(WO/sub 4/)/sub 2/ (Yb:KYW) thin-disk laser. We achieved simple and robust single-pass OPG at the full repetition rate of 24 MHz. We obtained stable 1 W signal power in 320 fs-pulses with a good transverse beam quality (M/sup 2/ = 1.1) at 1.45 /spl mu/m and 0.6 W of idler power at 3.55 /spl mu/m for 7.8 W pump power. For a few minutes, even 2.5 W of signal output power have been achieved. The damage resistance of PPSLT seems to be significantly better than for congruent PPLN.
Keywords :
high-speed optical techniques; laser beams; lithium compounds; nonlinear optics; optical parametric devices; photorefractive materials; solid lasers; stoichiometry; ytterbium; 0.6 W; 1 W; 1.45 micron; 2.5 W; 3.55 micron; 320 fs; 7.8 W; KY(WO/sub 4/)/sub 2/:Yb; LiTaO/sub 3/; Yb:KY(WO/sub 4/)/sub 2/ thin-disk laser; femtosecond optical parametric generation; full repetition rate; high-power femtosecond laser; idler power; nonlinear material; periodically poled stoichiometric LiTaO/sub 3/; robust single pass; signal power; transverse beam quality; Laser beams; Laser excitation; Laser mode locking; Materials science and technology; Nonlinear optics; Optical pulse generation; Power generation; Power lasers; Pump lasers; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics, 2002. CLEO '02. Technical Digest. Summaries of Papers Presented at the
Conference_Location :
Long Beach, CA, USA
Print_ISBN :
1-55752-706-7
DOI :
10.1109/CLEO.2002.1033921
