COHERENT OSCILLATION OF ZONE-FOLDED PHONON MODES IN GAAS-ALAS SUPERLATTICES

被引：176

作者：

YAMAMOTO, A

MISHINA, T

MASUMOTO, Y

NAKAYAMA, M

机构：

[1] UNIV TSUKUBA,INST PHYS,TSUKUBA,IBARAKI 305,JAPAN

[2] OSAKA CITY UNIV,FAC ENGN,DEPT APPL PHYS,SUMIYOSHI KU,OSAKA 558,JAPAN

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 73卷 / 05期

关键词：

D O I：

10.1103/PhysRevLett.73.740

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have observed a coherent oscillation of zone-folded acoustic phonons in GaAs-AlAs superlattices for the first time by means of a femtosecond time-resolved pump-probe technique. The oscillatory component in the time-resolved reflection signal corresponds to the upper branch (B2 symmetry) of the first-order doublet mode. Carriers were selectively excited in well layers and the B2-symmetry phonon mode was selectively generated. The dephasing time of the B2 mode was measured to be 70 ps from our experiments.

引用

页码：740 / 743

页数：4

共 14 条

[1]

Cardona M., 1989, LIGHT SCATTERING SOL

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

CHO, GC ;

KUTT, W ;

KURZ, H .

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

[3] OBSERVATION OF FOLDED ACOUSTIC PHONONS IN A SEMICONDUCTOR SUPER-LATTICE [J].

COLVARD, C ;

MERLIN, R ;

KLEIN, MV ;

GOSSARD, AC .

PHYSICAL REVIEW LETTERS, 1980, 45 (04) :298-301

[4] PICOSECOND ACOUSTICS IN POLYTHIOPHENE THIN-FILMS [J].

KANNER, GS ;

VARDENY, ZV ;

HESS, BC .

PHYSICAL REVIEW B, 1990, 42 (08) :5403-5406

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

KUTT, WA ;

ALBRECHT, W ;

KURZ, H .

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

[6] VIBRONIC QUANTUM BEATS IN PBS MICROCRYSTALLITES [J].

MACHOL, JL ;

WISE, FW ;

PATEL, RC ;

TANNER, DB .

PHYSICAL REVIEW B, 1993, 48 (04) :2819-2822

[7] OBSERVATION OF COHERENT OPTICAL PHONONS IN BII3 [J].

MISHINA, T ;

MASUMOTO, Y ;

FLUEGEL, B ;

MEISSNER, K ;

PEYGHAMBARIAN, N .

PHYSICAL REVIEW B, 1992, 46 (07) :4229-4232

[8] ZONE-FOLDING EFFECTS ON PHONONS IN GAAS-ALAS SUPERLATTICES [J].

NAKAYAMA, M ;

KUBOTA, K ;

KANATA, T ;

KATO, H ;

CHIKA, S ;

SANO, N .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1985, 24 (10) :1331-1334

[9] INTERFERENCE EFFECTS ON PHOTOREFLECTANCE LINE-SHAPES OF EXCITONS IN GAAS/ALAS SUPERLATTICES [J].

NAKAYAMA, M ;

TANAKA, I ;

DOGUCHI, T ;

NISHIMURA, H .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1990, 29 (10) :L1760-L1762

[10] GENERATION AND DETECTION OF COHERENT OPTICAL PHONONS IN GERMANIUM [J].

PFEIFER, T ;

KUTT, W ;

KURZ, H ;

SCHOLZ, R .

PHYSICAL REVIEW LETTERS, 1992, 69 (22) :3248-3251

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