All-optical short pulse translation through cross-phase modulation in a VO2 thin film

被引：1
作者：
Fardad, Shima [1 ]
Das, Susobhan [1 ]
Salandrino, Alessandro [1 ]
Breckenfeld, Eric [2 ]
Kim, Heungsoo [2 ]
Wu, Judy [3 ]
Hui, Rongqing [1 ]
机构：
[1] Univ Kansas, Dept Elect Engn & Comp Sci, Lawrence, KS 66045 USA
[2] Naval Res Lab, 4555 Overlook Ave SW, Washington, DC 20375 USA
[3] Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA
来源：
OPTICS LETTERS | 2016年 / 41卷 / 02期
基金：
美国国家科学基金会;
关键词：
VANADIUM DIOXIDE; TRANSITION; DEVICES;
D O I：
10.1364/OL.41.000238
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
VO2 is a promising material for reconfigurable photonic devices due to the ultrafast changes in electronic and optical properties associated with its dielectric-to-metal phase transition. Based on a fiber-optic, pump-probe setup at 1550 nm wavelength window, and by varying the pump-pulse duration, we show that the material phase transition is primarily caused by the pump-pulse energy. For the first time, we demonstrate that the instantaneous optical phase modulation of probe during pump leading edge can be utilized to create short optical pulses at probe wavelength, through optical frequency discrimination. This circumvents the impact of long recovery time well known for the phase transition of VO2. (C) 2016 Optical Society of America
引用
收藏
页码：238 / 241
页数：4
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