Tunable All-optical Wavelength Conversion of a Femtosecond Pulse Based on Cascaded (2) SHG + DFG Interactions
- Resource Type
- Article
- Authors
- Yuping Chen; Feng Lu; Wenjie Lu; Xianfeng Chen
- Source
- Journal of the Korean Physical Society, 55(3), pp.1282-1285 Sep, 2009
- Subject
- 물리학
- Language
- English
- ISSN
- 1976-8524
0374-4884
Based on cascaded second harmonic generation and difference-frequency generation interactions and employing a type-I quasi-phase-matching technique in MgO-doped periodically poled lithium niobate, we realized wavelength conversion of a 70-femtosecond pulse without pulse broadening at the group-velocity-matching wavelength. Due to the 25 nm bandwidth of second harmonic generation obtained in a 20-mm-long crystal, we convert a 70-fs pulse centered at 1.56 μm by using a continuous-wave signal at 1.60 μm. No obvious distortion or broadening of the converted pulse was observed.