Modulational transparency and femtosecond pulse train in Bragg reflectors with time-varying dielectric constant
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Modulational transparency and femtosecond pulse train in Bragg reflectors with time-varying dielectric constant
- 发表刊物：
- APPLIED PHYSICS LETTERS
- 摘要：
- A theoretical study is conducted to investigate the nonlinear properties of a one-dimensional 1D
periodic stratified structure with time-varying dielectric constants. When the dielectric constant is
modulated temporally, the distributed Bragg reflector exhibits different throughputs depending on
the modulation amplitude. Below or at the critical value, a periodic and stable femtosecond pulse
train is generated; above this critical value, the modulational transparency is observed, as the
reflectivity decreases rapidly, so that all incident radiation is completely transferred through the
layered media. When the layer number is up to 15, the pulse train generated at the critical value is
periodic with perfect reflectivity and zero rejection. These excellent optical properties may enhance
the potential applications of the 1D periodic stratified structure in optical switches and laser
optics.
- 合写作者：
- Jiu Hui Wu, T. H. Cheng, A. Q. Liu, and Y. X. Wang
- 卷号：
- 89
- 页面范围：
- 263103
- 是否译文：
- 否
- 发表时间：
- 2006-12-26