Circularly Polarized Optical Stark Effect in CdSe Colloidal Quantum Wells

被引：17
作者：
Diroll, Benjamin T. [1 ]
机构：
[1] Argonne Natl Lab, Ctr Nanoscale Mat, Lemont, IL 60439 USA
来源：
NANO LETTERS | 2020年 / 20卷 / 11期
关键词：
AC Stark Effect; Optical Stark Effect; Nanoplatelets; Circular Dichroism; Autler-Townes Effect;
D O I：
10.1021/acs.nanolett.0c02409
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Colloidal quantum wells, or nanoplatelets, exhibit large, circularly polarized optical Stark effects under sub-band-gap femtosecond illumination. The optical Stark effect is measured for CdSe colloidal quantum wells of several thicknesses and separately as a measure of pump photon energy, pump fluence, and temperature. These measurements show that optical Stark effects in colloidal quantum wells shift the absorption features up to 5 meV, at the intensities up to 2.9 GW.cm(-2) and large detuning (>400 meV) of the pump photon energy from the band edge absorption. Optical Stark shifts are underpinned by large transition dipoles of the colloidal quantum wells (mu = 15-23 D), which are larger than those of any reported colloidal quantum dots or epitaxial quantum wells. The rapid (<500 fs), narrow band blue shift of the excitonic features under circular excitation indicates the viability of these materials beyond light emission such as spintronics or all-optical switching.
引用
收藏
页码：7889 / 7895
页数：7
相关论文
共 82 条
[31]   Ultrafast manipulation of electron spin coherence [J].
Gupta, JA ;
Knobel, R ;
Samarth, N ;
Awschalom, DD .
SCIENCE, 2001, 292 (5526) :2458-2461
[32]   Giant Modal Gain Coefficients in Colloidal II-VI Nanoplatelets [J].
Guzelturk, Burak ;
Pelton, Matthew ;
Olutas, Murat ;
Demir, Hilmi Volkan .
NANO LETTERS, 2019, 19 (01) :277-282
[33]   Amplified Spontaneous Emission and Lasing in Colloidal Nanoplatelets [J].
Guzelturk, Burak ;
Kelestemur, Yusuf ;
Olutas, Murat ;
Delikanli, Savas ;
Demir, Hilmi Volkan .
ACS NANO, 2014, 8 (07) :6599-6605
[34]   Ultrafast all-optical switching in a silicon-based photonic crystal [J].
Haché, A ;
Bourgeois, M .
APPLIED PHYSICS LETTERS, 2000, 77 (25) :4089-4091
[35]   Optical Studies of Dynamics in Noble Metal Nanostructures [J].
Hartland, Gregory V. .
CHEMICAL REVIEWS, 2011, 111 (06) :3858-3887
[36]   EINSTEIN COEFFICIENTS, CROSS-SECTIONS, F VALUES, DIPOLE-MOMENTS, AND ALL THAT [J].
HILBORN, RC .
AMERICAN JOURNAL OF PHYSICS, 1982, 50 (11) :982-986
[37]   ULTRAFAST ALL-OPTICAL GATE WITH SUBPICOSECOND ON AND OFF RESPONSE-TIME [J].
HULIN, D ;
MYSYROWICZ, A ;
ANTONETTI, A ;
MIGUS, A ;
MASSELINK, WT ;
MORKOC, H ;
GIBBS, HM ;
PEYGHAMBARIAN, N .
APPLIED PHYSICS LETTERS, 1986, 49 (13) :749-751
[38]  
Ithurria S, 2011, NAT MATER, V10, P936, DOI [10.1038/NMAT3145, 10.1038/nmat3145]
[39]   Quasi 2D Colloidal CdSe Platelets with Thicknesses Controlled at the Atomic Level [J].
Ithurria, Sandrine ;
Dubertret, Benoit .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (49) :16504-+
[40]   LASER-INDUCED EXCITON SPLITTING [J].
JOFFRE, M ;
HULIN, D ;
MIGUS, A ;
COMBESCOT, M .
PHYSICAL REVIEW LETTERS, 1989, 62 (01) :74-77
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