Title :
Femtosecond parametric generation in ZnGeP/sub 2/
Author :
Petrov, Valentin ; Rotermund, Fabian ; Noack, Ferenc ; Schunemann, P.
Author_Institution :
Max-Born-Inst., Berlin, Germany
Abstract :
Summary form only given. ZnGeP/sub 2/ is transparent between 0.7 and 12 /spl mu/m and possesses the highest (d/sub 14/=75 pm/V) nonlinearity of all commercially available birefringent nonlinear optical crystals. These properties are very attractive for traveling wave optical parametric generation using short pump pulses to produce tunable signal and idler pulses in the mid-infrared (MIR). Recently 1-ps short MIR pulses were generated with a ZnGeP/sub 2/ optical parametric generator (OPG) pumped between 2.9 and 3.5 /spl mu/m by a second OPG based on MgO:LiNbO/sub 3/. Going to shorter pump pulses increases the role of the group velocity mismatch (GVM) and requires shorter crystal lengths. Consequently the anomalous near-infrared (NIR) absorption near the band-edge becomes a less stringent limitation on the pump wavelength. We report for the first time to our knowledge on femtosecond operation of a ZnGeP/sub 2/ OPG.
Keywords :
birefringence; germanium compounds; optical materials; optical parametric devices; optical pulse generation; optical tuning; ternary semiconductors; transparency; zinc compounds; 0.7 to 12 mum; 2.9 to 3.5 mum; MgO:LiNbO/sub 3/; ZnGeP/sub 2/; anomalous near-infrared absorption; band-edge; birefringent nonlinear optical crystals; commercially available crystals; crystal lengths; femtosecond operation; femtosecond parametric generation; group velocity mismatch; idler pulses; mid-infrared region; nonlinearity; optical parametric generator; pump pulses; pump wavelength; short pump pulses; traveling wave optical parametric generation; tunable signal pulses; Biomedical optical imaging; Electromagnetic wave absorption; Laser tuning; Nonlinear optics; Optical attenuators; Optical pulse generation; Optical pumping; Optical sensors; Pump lasers; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics, 1999. CLEO '99. Summaries of Papers Presented at the Conference on
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-595-1
DOI :
10.1109/CLEO.1999.833842
