Saturation and self-lensing in self-assembled quantum dots with constant-wave driving

被引：3

作者：

Tierno, A. ^{[1
,2
]}

Ackemann, T. ^{[1
,2
]}

Maggipinto, T. ^{[3
]}

Brambilla, M. ^{[3
]}

机构：

[1] Univ Strathclyde, Dept Phys, Glasgow G4 ONG, Lanark, Scotland

[2] Univ Strathclyde, SUPA, Glasgow G4 ONG, Lanark, Scotland

[3] Univ & Politecn Bari, Dipartimento Interateneo Fis, I-70126 Bari, Italy

来源：

PHYSICAL REVIEW B | 2009年 / 80卷 / 03期

基金：

英国工程与自然科学研究理事会;

关键词：

LINEWIDTH ENHANCEMENT FACTOR; GAIN SATURATION; CAVITY SOLITONS; LASERS; FILAMENTATION; PATTERN;

D O I：

10.1103/PhysRevB.80.035314

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The nonlinear optical response of self-assembled quantum dots to cw driving is analyzed via numerical simulations of a spatially resolved rate equation model. The saturation is shown to follow a behavior in between the one for a dominantly, homogeneously, and inhomogeneously broadened medium. Self-lensing is suggested to probe the refractive-index nonlinearities and to open a complementary way of characterizing phase-amplitude coupling (alpha factor) in quantum-dots samples. For conservative assumptions on current samples the minimum focal length is predicted to be +/-1.7 mm for an input beam with 15 mu m radius at a detuning of 1.1 inhomogeneous linewidths from gain center.

引用

页数：6

共 41 条

[1]

Ackemann T, 2005, LECT NOTES PHYS, V661, P55

[2] Self-lensing in sodium vapor: influence of saturation, atomic diffusion and radiation trapping [J].

Ackemann, T ;

Scholz, T ;

Vorgerd, C ;

Nalik, J ;

Hoffer, LM ;

Lippi, GL .

OPTICS COMMUNICATIONS, 1998, 147 (4-6) :411-428

[3]

Akhmediev N., 2005, Lecture Notes in Physics, V661

[4] Ultrafast nonlinear processes in quantum-dot optical amplifiers [J].

Akiyama, T ;

Kuwatsuka, H ;

Simoyama, T ;

Nakata, Y ;

Mukai, K ;

Sugawara, M ;

Wada, O ;

Ishikawa, H .

OPTICAL AND QUANTUM ELECTRONICS, 2001, 33 (7-10) :927-938

[5] Absorption spectroscopy of single InAs self-assembled quantum dots [J].

Alèn, B ;

Karrai, K ;

Warburton, RJ ;

Bickel, F ;

Petroff, PM ;

Martínez-Pastor, J .

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2004, 21 (2-4) :395-399

[6] 1.3-μm InAs quantum-dot laser with high dot density and high uniformity [J].

Amano, T ;

Sugaya, T ;

Komori, K .

IEEE PHOTONICS TECHNOLOGY LETTERS, 2006, 18 (1-4) :619-621

[7] Single photon emission from site-controlled pyramidal quantum dots [J].

Baier, MH ;

Pelucchi, E ;

Kapon, E ;

Varoutsis, S ;

Gallart, M ;

Robert-Philip, I ;

Abram, I .

APPLIED PHYSICS LETTERS, 2004, 84 (05) :648-650

[8] Cavity solitons as pixels in semiconductor microcavities [J].

Barland, S ;

Tredicce, JR ;

Brambilla, M ;

Lugiato, LA ;

Balle, S ;

Giudici, M ;

Maggipinto, T ;

Spinelli, L ;

Tissoni, G ;

Knödl, T ;

Miller, M ;

Jäger, R .

NATURE, 2002, 419 (6908) :699-702

[9] Gain dynamics and saturation in semiconductor quantum dot amplifiers [J].

Berg, TW ;

Mork, J ;

Hvam, JM .

NEW JOURNAL OF PHYSICS, 2004, 6 :1-23

[10] Special issue on optoelectronic devices based on quantum dots [J].

Bhattacharya, Pallab ;

Bimberg, Dieter ;

Arakawa, Yasuhiko .

PROCEEDINGS OF THE IEEE, 2007, 95 (09) :1718-1722

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