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Two-color pulse compression in aperiodically-poled lithium niobate |
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| Authors: | Xianglong Zeng Satoshi Ashihara Xianfeng Chen Kazuo Kuroda |
| Affiliation: | a Institute of Industrial Science, The University of Tokyo, 4-6-1, Komaba, Meguro-ku, Tokyo 153-8505, Japan b The Key Lab of Specialty Fiber Optics and Optical Access Network, SCIE, Shanghai University, 149 Yanchang Road, Shanghai 200072, China c Department of Applied Physics, Faculty of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan d PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi-shi, Saitama 332-0012, Japan e Department of Physics, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China |
| Abstract: | We experimentally demonstrate engineerable compression of two-colored pulses in a linearly-chirped quasi-phase-matching grating. Quadratic solitons generated from fundamental input are reshaped through cascaded parametric processes of second-harmonic generation (SHG) and the back-conversion. We use type-I (e: o + o) SHG geometry in a 50-mm-long aperiodically-poled MgO:LiNbO3 device to satisfy the group-velocity matching condition. Simultaneously compressed fundamental and SH pulses of about 55-fs duration with small pedestal are generated from the fundamental input pulses of 95-fs duration. |
| Keywords: | 42.50.Md 42.65.Re 42.70.Mp |
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