Gain dynamics and ultrafast spectral hole burning in In(Ga)As self-organized quantum dots

被引：42
作者：
Kim, K
Urayama, J
Norris, TB
Singh, J
Phillips, J
Bhattacharya, P
机构：
[1] Univ Michigan, Dept Elect Engn & Comp Sci, Ctr Ultrafast Opt Sci, Ann Arbor, MI 48109 USA
[2] Univ Michigan, Dept Elect Engn & Comp Sci, Solid State Elect Lab, Ann Arbor, MI 48109 USA
来源：
APPLIED PHYSICS LETTERS | 2002年 / 81卷 / 04期
关键词：
D O I：
10.1063/1.1493665
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Using a femtosecond three-pulse pump-probe technique, we investigated spectral hole-burning and gain recovery dynamics in self-organized In(Ga)As quantum dots. The spectral hole dynamics are qualitatively different from those observed in quantum wells, and allow us to distinguish unambiguously the gain recovery due to intradot relaxation and that due to carrier capture. The gain recovery due to carrier-carrier scattering-dominated intradot relaxation is very fast (similar to130 fs), indicating that this is not the factor limiting the bandwidth of directly modulated quantum dot lasers. (C) 2002 American Institute of Physics.
引用
收藏
页码：670 / 672
页数：3
相关论文
共 13 条
[1]   Nonlinear gain dynamics in quantum-dot optical amplifiers and its application to optical communication devices [J].
Akiyama, T ;
Kuwatsuka, H ;
Simoyama, T ;
Nakata, Y ;
Mukai, K ;
Sugawara, M ;
Wada, O ;
Ishikawa, H .
IEEE JOURNAL OF QUANTUM ELECTRONICS, 2001, 37 (08) :1059-1065
[2]  
[Anonymous], QUANTUM DOT HETEROST
[3]   QUANTUM-WELL LASERS GAIN, SPECTRA, DYNAMICS [J].
ARAKAWA, Y ;
YARIV, A .
IEEE JOURNAL OF QUANTUM ELECTRONICS, 1986, 22 (09) :1887-1899
[4]   MULTIDIMENSIONAL QUANTUM WELL LASER AND TEMPERATURE-DEPENDENCE OF ITS THRESHOLD CURRENT [J].
ARAKAWA, Y ;
SAKAKI, H .
APPLIED PHYSICS LETTERS, 1982, 40 (11) :939-941
[5]   OPTICAL-PROPERTIES OF ALXGA1-XAS [J].
ASPNES, DE ;
KELSO, SM ;
LOGAN, RA ;
BHAT, R .
JOURNAL OF APPLIED PHYSICS, 1986, 60 (02) :754-767
[6]   Ultrafast gain recovery and modulation limitations in self-assembled quantum-dot devices [J].
Berg, TW ;
Bischoff, S ;
Magnusdottir, I ;
Mork, J .
IEEE PHOTONICS TECHNOLOGY LETTERS, 2001, 13 (06) :541-543
[7]   In(Ga)As/GaAs self-organized quantum dot lasers: DC and small-signal modulation properties [J].
Bhattacharya, P ;
Kamath, KK ;
Singh, J ;
Klotzkin, D ;
Phillips, J ;
Jiang, HT ;
Chervela, N ;
Norris, TB ;
Sosnowski, T ;
Laskar, J ;
Murty, MR .
IEEE TRANSACTIONS ON ELECTRON DEVICES, 1999, 46 (05) :871-883
[8]   Ultrafast gain dynamics in InAs-InGaAs quantum-dot amplifiers [J].
Borri, P ;
Langbein, W ;
Hvam, JM ;
Heinrichsdorff, E ;
Mao, MH ;
Bimberg, D .
IEEE PHOTONICS TECHNOLOGY LETTERS, 2000, 12 (06) :594-596
[9]   Strain distribution and electronic spectra of InAs/GaAs self-assembled dots: An eight-band study [J].
Jiang, HT ;
Singh, J .
PHYSICAL REVIEW B, 1997, 56 (08) :4696-4701
[10]   Small-signal modulation and differential gain of single-mode self-organized In0.4Ga0.6As/GaAs quantum dot lasers [J].
Kamath, K ;
Phillips, J ;
Jiang, H ;
Singh, J ;
Bhattacharya, P .
APPLIED PHYSICS LETTERS, 1997, 70 (22) :2952-2953
12