Frequency degenerate and nondegenerate two-photon absorption spectra of semiconductor quantum dots

被引：78

作者：

Padilha, L. A.

Fu, J.

Hagan, D. J.

Van Stryland, E. W.

Cesar, C. L.

Barbosa, L. C.

Cruz, C. H. B.

Buso, D.

Martucci, A.

机构：

[1] Univ Cent Florida, CREOL, Coll Opt & Photon, Orlando, FL 32816 USA

[2] Univ Cent Florida, FPCE, Orlando, FL 32816 USA

[3] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP, Brazil

[4] Univ Padua, Dipartimento Ingn Meccan, Settore Mat, I-35131 Padua, Italy

来源：

PHYSICAL REVIEW B | 2007年 / 75卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.75.075325

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The frequency degenerate and nondegenerate two-photon absorption (2PA) spectra of direct band gap semiconductor quantum dots are studied. Measuring the spectra for both cases in samples of CdSe and CdTe with different quantum dot sizes and size distributions, we observe that the 2PA spectra and the 2PA coefficient are size dependent, so that smaller dots have smaller 2PA even after taking into account the volume fraction. Theory considering the mixing of the hole bands, in a k center dot p model, explains the data quite well except for the smallest dots. A comparison with the parabolic band approximation is also shown.

引用

页数：8

共 28 条

[1] CdTe quantum dots by melt heat treatment in borosilicate glasses
Barbosa, LC
Reynoso, VCS
dePaula, AM
deOliveira, CRM
Alves, OL
Craievich, AF
Marotti, RE
Cruz, CHB
Cesar, CL
[J]. JOURNAL OF NON-CRYSTALLINE SOLIDS, 1997, 219 : 205 - 211
[2] Growth and morphology of cadmium chalcogenides:: the synthesis of nanorods, tetrapods, and spheres from CdO and Cd(O2CCH3)2
Bunge, SD
Krueger, KM
Boyle, TJ
Rodriguez, MA
Headley, TJ
Colvin, VL
[J]. JOURNAL OF MATERIALS CHEMISTRY, 2003, 13 (07) : 1705 - 1709
[3] BELOW-BAND-GAP 3RD-ORDER OPTICAL NONLINEARITY OF NANOMETER-SIZE SEMICONDUCTOR CRYSTALLITES
COTTER, D
BURT, MG
MANNING, RJ
[J]. PHYSICAL REVIEW LETTERS, 1992, 68 (08) : 1200 - 1203
[4] Cruz CHB, 1997, APPL SURF SCI, V109, P30, DOI 10.1016/S0169-4332(96)00737-4
[5] ABSORPTION AND INTENSITY-DEPENDENT PHOTOLUMINESCENCE MEASUREMENTS ON CDSE QUANTUM DOTS - ASSIGNMENT OF THE 1ST ELECTRONIC-TRANSITIONS
EKIMOV, AI
HACHE, F
SCHANNEKLEIN, MC
RICARD, D
FLYTZANIS, C
KUDRYAVTSEV, IA
YAZEVA, TV
RODINA, AV
EFROS, AL
[J]. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1993, 10 (01) : 100 - 107
[6] Two-photon transitions in systems with semiconductor quantum dots
Fedorov, AV
Baranov, AV
Inoue, K
[J]. PHYSICAL REVIEW B, 1996, 54 (12) : 8627 - 8632
[7] OPTICAL NONLINEARITIES IN CDSXSE1-X-DOPED GLASS WAVE-GUIDES
FINLAYSON, N
BANYAI, WC
SEATON, CT
STEGEMAN, GI
ONEILL, M
CULLEN, TJ
IRONSIDE, CN
[J]. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1989, 6 (04) : 675 - 684
[8] Raman, hyper-Raman, hyper-Rayleigh, two-photon luminescence and morphology-dependent resonance modes in a single optical tweezers system
Fontes, A
Ajito, K
Neves, AAR
Moreira, WL
de Thomaz, AA
Barbosa, LC
de Paula, AM
Cesar, CL
[J]. PHYSICAL REVIEW E, 2005, 72 (01):
[9] In vivo cancer targeting and imaging with semiconductor quantum dots
Gao, XH
Cui, YY
Levenson, RM
Chung, LWK
Nie, SM
[J]. NATURE BIOTECHNOLOGY, 2004, 22 (08) : 969 - 976
[10] Resonant enhancement of two-photon absorption in substituted fluorene molecules
Hales, JM
Hagan, DJ
Van Stryland, EW
Schafer, KJ
Morales, AR
Belfield, KD
Pacher, P
Kwon, O
Zojer, E
Bredas, JL
[J]. JOURNAL OF CHEMICAL PHYSICS, 2004, 121 (07) : 3152 - 3160

← 1 2 3 →