Non-equilibrium ultrashort pulse generation strategies in VECSELs

被引：17
作者：
Kilen, I. [1 ]
Koch, S. W. [2 ,3 ,4 ]
Hader, J. [2 ,5 ]
Moloney, J. V. [1 ,2 ,5 ,6 ]
机构：
[1] Univ Arizona, Program Appl Math, Tucson, AZ 85721 USA
[2] Univ Arizona, Coll Opt Sci, 1630 East Univ Blvd, Tucson, AZ 85721 USA
[3] Philipps Univ Marburg, Dept Phys, Renthof 5, D-35032 Marburg, Germany
[4] Philipps Univ Marburg, Mat Sci Ctr, Renthof 5, D-35032 Marburg, Germany
[5] Nonlinear Control Strategies Inc, Tucson, AZ 85704 USA
[6] Univ Arizona, Dept Math, 617 N Santa Rita Ave, Tucson, AZ 85721 USA
来源：
OPTICA | 2017年 / 4卷 / 04期
关键词：
SURFACE-EMITTING LASER; SEMICONDUCTOR-LASER; OUTPUT POWER; MODE-LOCKING; DISK LASER; ULTRAFAST;
D O I：
10.1364/OPTICA.4.000412
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Vertical external cavity surface emitting lasers are ideal testbeds for studying nonlinear many-body systems driven far from equilibrium. The classical laser gain picture fails, however, when a high peak intensity optical pulse of duration shorter than the intrinsic carrier scattering time interacts with electrons in the conduction and holes in the valence band, and the non-equilibrium carrier distributions cannot recover during the presence of the exciting pulse. We present the optimization of ultrashort mode-locked pulses in a vertical external cavity surface emitting laser cavity with a saturable absorber mirror by modelling non-equilibrium quantum dynamics of the electron-hole excitations in the semiconductor quantum-well gain and absorber medium via the semiconductor Bloch equations and treating the field propagation at the level of Maxwell's wave equation. We introduce a systematic design that predicts the generation of stable mode-locked pulses of duration less than twenty femtoseconds. This factor of five improvement is of interest for mode-locking and ultrafast semiconductor dynamics applications. (C) 2017 Optical Society of America
引用
收藏
页码：412 / 417
页数：6
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