Title :
Simultaneous second- and third-harmonic generations of femtosecond pulses using a two-dimensional nonlinear χ photonic crystal
Author :
Fujioka, Nobuhide ; Ashihara, Satoshi ; Ono, Hidenobu ; Shimura, Tsutomu ; Kitroda, K.
Author_Institution :
Inst. of Ind. Sci., Tokyo Univ., Japan
Abstract :
In this paper, we present the GV-matched second- and third-harmonic (TH) generations (THG) of femtosecond pulses in a 2D NPC. In our device, two gratings with different periods (11.6μm and 9.36μm) are superimposed with an angle of 12°, to satisfy the noncollinear QPM conditions for SHG and THG, respectively. In this experiment, TH efficiency was 2% under the condition where the maximum SH efficiency of 25% was obtained.
Keywords :
diffraction gratings; high-speed optical techniques; optical harmonic generation; optical materials; optical phase matching; photonic crystals; SHG; THG; femtosecond pulse; grating; group velocity; noncollinear QPM; second-harmonic generation; third-harmonic generation; two-dimensional nonlinear photonic crystal; Bandwidth; Frequency conversion; Gratings; Laser theory; Optical propagation; Optical pulse generation; Photonic crystals; Pulse generation; Solitons; Voltage;
Conference_Titel :
Lasers and Electro-Optics Europe, 2005. CLEO/Europe. 2005 Conference on
Print_ISBN :
0-7803-8974-3
DOI :
10.1109/CLEOE.2005.1568012
