Interaction of electron and hole plasma with coherent longitudinal optical phonons in GaAs

被引：26

作者：

Chang, YM ^{[1
]}

机构：

[1] Natl Taiwan Univ, Ctr Condensed Matter Sci, Taipei 10673, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2002年 / 80卷 / 14期

关键词：

D O I：

10.1063/1.1466535

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The interaction of photoexcited electron-hole plasma with impulsively excited coherent longitudinal optical phonons in GaAs was investigated via time-resolved second-harmonic generation. The dephasing time of coherent LO phonons reduces significantly as photoexcited electron-hole plasma is injected into the near-surface depletion region. The coherent LO-electron and LO-hole coupling modes can both be clearly observed and investigated in real time. The rapid dephasing of the coherent LO-hole coupling mode is attributed to the strong polar phonon-carrier interaction and the overdamped nature of hole plasma. (C) 2002 American Institute of Physics.

引用

页码：2487 / 2489

页数：3

共 17 条

[1] Coherent phonon spectroscopy of GaAs surfaces using time-resolved second-harmonic generation [J].

Chang, YM ;

Xu, L ;

Tom, HWK .

CHEMICAL PHYSICS, 2000, 251 (1-3) :283-308

[2] Generation and relaxation of coherent majority plasmons [J].

Cho, GC ;

Dekorsy, T ;

Bakker, HJ ;

Hovel, R ;

Kurz, H .

PHYSICAL REVIEW LETTERS, 1996, 77 (19) :4062-4065

[3] SUBPICOSECOND TIME-RESOLVED COHERENT-PHONON OSCILLATIONS IN GAAS [J].

CHO, GC ;

KUTT, W ;

KURZ, H .

PHYSICAL REVIEW LETTERS, 1990, 65 (06) :764-766

[4] SUBPICOSECOND CARRIER TRANSPORT IN GAAS SURFACE-SPACE-CHARGE FIELDS [J].

DEKORSY, T ;

PFEIFER, T ;

KUTT, W ;

KURZ, H .

PHYSICAL REVIEW B, 1993, 47 (07) :3842-3849

[5] Ultrafast decay of coherent plasmon-phonon coupled modes in highly doped GaAs [J].

Hase, M ;

Nakashima, S ;

Mizoguchi, K ;

Harima, H ;

Sakai, K .

PHYSICAL REVIEW B, 1999, 60 (24) :16526-16530

[6] Light scattering by a multicomponent plasma coupled with longitudinal-optical phonons: Raman spectra of p-type GaAs:Zn [J].

Irmer, G ;

Wenzel, M ;

Monecke, J .

PHYSICAL REVIEW B, 1997, 56 (15) :9524-9538

[7] Coherent plasmons in n-doped GaAs [J].

Kersting, R ;

Heyman, JN ;

Strasser, G ;

Unterrainer, K .

PHYSICAL REVIEW B, 1998, 58 (08) :4553-4559

[8] GENERATION OF COHERENT PHONONS IN CONDENSED MEDIA [J].

KUTT, WA ;

ALBRECHT, W ;

KURZ, H .

IEEE JOURNAL OF QUANTUM ELECTRONICS, 1992, 28 (10) :2434-2444

[9] COHERENT PHONON OSCILLATIONS IN GAAS [J].

KUZNETSOV, AV ;

STANTON, CJ .

PHYSICAL REVIEW B, 1995, 51 (12) :7555-7565

[10] Femtosecond investigation of the hot-phonon effect in GaAs at room temperature [J].

Langot, P ;

Del Fatti, N ;

Christofilos, D ;

Tommasi, R ;

Vallee, F .

PHYSICAL REVIEW B, 1996, 54 (20) :14487-14493

← 1 2 →