Measurement of optical nonlinearities from intersubband transitions in GaN/AlGaN quantum wells at 1.5 μm

被引：12

作者：

Chen, G ^{[1
]}

Rapaport, R ^{[1
]}

Mitrofanov, O ^{[1
]}

Gmachl, C ^{[1
]}

Ng, HM ^{[1
]}

机构：

[1] Lucent Technol, Bell Labs, Murray Hill, NJ 07974 USA

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2003年 / 240卷 / 02期

关键词：

D O I：

10.1002/pssb.200303371

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We measured the resonant nonlinear optical absorption and refraction due to intersubband transitions in GaN/AlGaN multiple quantum well structures at 1.5 mum. The measured values are much smaller than that predicted by theoretical studies. This is attributed to a larger than expected dephasing of excited electrons. At high excitation intensity, the absorption can be saturated. (C) 2003 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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页码：384 / 387

页数：4

相关论文

共 9 条

[1] Intersubband absorption at λ∼1.55 μm in well- and modulation-doped GaN/AlGaN multiple quantum wells with superlattice barriers [J].

Gmachl, C ;

Ng, HM ;

Chu, SNG ;

Cho, AY .

APPLIED PHYSICS LETTERS, 2000, 77 (23) :3722-3724

[2] Intersubband absorption in degenerately doped GaN/AlxGa1-xN coupled double quantum wells [J].

Gmachl, C ;

Ng, HM ;

Cho, AY .

APPLIED PHYSICS LETTERS, 2001, 79 (11) :1590-1592

[3] Comparative study of ultrafast intersubband electron scattering times at ∼1.55 μm wavelength in GaN/AlGaN heterostructures [J].

Heber, JD ;

Gmachl, C ;

Ng, HM ;

Cho, AY .

APPLIED PHYSICS LETTERS, 2002, 81 (07) :1237-1239

[4] Ultrafast intersubband relaxation (≤150 fs) in AlGaN/GaN multiple quantum wells [J].

Iizuka, N ;

Kaneko, K ;

Suzuki, N ;

Asano, T ;

Noda, S ;

Wada, O .

APPLIED PHYSICS LETTERS, 2000, 77 (05) :648-650

[5] Near-infrared intersubband absorption in GaN/AlN quantum wells grown by molecular beam epitaxy [J].

Iizuka, N ;

Kaneko, K ;

Suzuki, N .

APPLIED PHYSICS LETTERS, 2002, 81 (10) :1803-1805

[6] Sensitive measurement of nonlinear refraction and two-photon absorption by spectrally resolved two-beam coupling [J].

Kang, I ;

Krauss, T ;

Wise, F .

OPTICS LETTERS, 1997, 22 (14) :1077-1079

[7]

LECREC O, 2002, OPTICAL FIBER COMM A, V4

[8] Molecular beam epitaxy of GaN/AlxGa1-xN superlattices for 1.52-4.2 μm intersubband transitions [J].

Ng, HM ;

Gmachl, C ;

Chu, SNG ;

Cho, AY .

JOURNAL OF CRYSTAL GROWTH, 2000, 220 (04) :432-438

[9] Electron scattering rates in AlGaN/GaN quantum wells for 1.55-μm inter-subband transition [J].

Suzuki, N ;

Iizuka, N .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1998, 37 (4A) :L369-L371