Spectrotemporal dynamics of a picosecond OPO based on chirped quasi-phase-matching

被引：23

作者：

Descloux, D. ^{[1
]}

Laporte, C. ^{[1
]}

Dherbecourt, J. -B. ^{[1
]}

Melkonian, J. -M. ^{[1
]}

Raybaut, M. ^{[1
]}

Drag, C. ^{[2
]}

Godard, A. ^{[1
]}

机构：

[1] Off Natl Etud & Rech Aerosp, F-91123 Palaiseau, France

[2] Univ Paris 11, Lab Aimee Cotton, Ctr Natl Rech Sci, Ecole Normale Super Cachan, F-91405 Orsay, France

来源：

OPTICS LETTERS | 2015年 / 40卷 / 02期

关键词：

OPTICAL PARAMETRIC-AMPLIFIERS; GENERATION;

D O I：

10.1364/OL.40.000280

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on the first experimental investigation of the spectral dynamics of a synchronously pumped optical parametric oscillator (OPO) by use of dispersive Fourier transformation. For standard pumping rates, we observe a reproducible steady-state pulse-to-pulse spectrum. However, at high pumping levels, the OPO delivers pulse trains with nontrivial oscillatory spectral patterns. So as to benefit from a tailored broadband gain spectrum, the investigated OPO contains a chirped quasi-phase matching (QPM) nonlinear crystal. We explore the specific impacts of using such a remarkable parametric amplification medium where nonlinearly coupled frequencies vary with position. Depending on the QPM chirp rate sign, a red-or blue-shift of the emitted wavelength occurs when the OPO is switched on, leading to different spectral steady-states. These singular spectrotemporal dynamics are evidenced and explained for the first time. (C) 2015 Optical Society of America

引用

页码：280 / 283

页数：4

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