INVESTIGATION OF EXCITONIC SATURATION BY TIME-RESOLVED CIRCULAR-DICHROISM IN GAAS-ALXGA1-XAS MULTIPLE-QUANTUM WELLS

被引：30

作者：

SNELLING, MJ

PEROZZO, P

HUTCHINGS, DC

GALBRAITH, I

MILLER, A

机构：

[1] UNIV CENT FLORIDA,CTR RES ELECTROOPT & LASERS,ORLANDO,FL 32826

[2] UNIV GLASGOW,DEPT ELECTR & ELECT ENGN,GLASGOW G12 8QQ,SCOTLAND

[3] HERIOT WATT UNIV,DEPT PHYS,EDINBURGH EH14 4AS,MIDLOTHIAN,SCOTLAND

[4] UNIV ST ANDREWS,DEPT PHYS & ASTRON,ST ANDREWS KY19 9SS,FIFE,SCOTLAND

来源：

PHYSICAL REVIEW B | 1994年 / 49卷 / 24期

关键词：

D O I：

10.1103/PhysRevB.49.17160

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Time- and wavelength-resolved circular dichroism of the excitonic saturation in GaAs-AlxGa1-xAs multiple quantum wells at room temperature is investigated using a degenerate excite-probe method. For moderate excitation, the effects of photogenerated carriers on the heavy-hole exciton resonance are separately identified as the contributions of phase-space filling and Coulombic effects (screening and line-shape broadening). These contributions are observed to be of a similar magnitude. The induced circular dichroism of the exciton saturation was observed to decay with a time constant of 50 ps, which is attributable to electron spin relaxation.

引用

页码：17160 / 17169

页数：10

共 22 条

[1]

ARONOV AG, 1983, ZH EKSP TEOR FIZ, V57, P680

[2] EXCITON SPIN DYNAMICS IN GAAS HETEROSTRUCTURES [J].

BARAD, S ;

BARJOSEPH, I .

PHYSICAL REVIEW LETTERS, 1992, 68 (03) :349-352

[3] CARRIER-CARRIER SCATTERING AND OPTICAL DEPHASING IN HIGHLY EXCITED SEMICONDUCTORS [J].

BINDER, R ;

SCOTT, D ;

PAUL, AE ;

LINDBERG, M ;

HENNEBERGER, K ;

KOCH, SW .

PHYSICAL REVIEW B, 1992, 45 (03) :1107-1115

[4]

Bir G. L., 1976, SOV PHYS JETP, V42, P705

[5]

DYAKONOV MI, 1971, ZH EKSP TEOR FIZ, V33, P1053

[6] INTENSITY OF OPTICAL ABSORPTION BY EXCITONS [J].

ELLIOTT, RJ .

PHYSICAL REVIEW, 1957, 108 (06) :1384-1389

[7] SPIN RELAXATION OF PHOTOELECTRONS IN P-TYPE GALLIUM-ARSENIDE [J].

FISHMAN, G ;

LAMPEL, G .

PHYSICAL REVIEW B, 1977, 16 (02) :820-831

[8] ELECTRON THEORY OF THE OPTICAL-PROPERTIES OF LASER-EXCITED SEMICONDUCTORS [J].

HAUG, H ;

SCHMITTRINK, S .

PROGRESS IN QUANTUM ELECTRONICS, 1984, 9 (01) :3-100

[9]

Haug H., 1993, QUANTUM THEORY OPTIC, V2nd

[10]

HUTCHINGS DC, 1988, THESIS HERIOTWATT U

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