Exploring two-dimensional electron gases with two-dimensional Fourier transform spectroscopy

Paul, J.; Dey, P.; Tokumoto, T.; Reno, J. L.; Hilton, D. J.; Karaiskaj, D.

doi:10.1063/1.4896777

Title: Exploring two-dimensional electron gases with two-dimensional Fourier transform spectroscopy

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Abstract

The dephasing of excitons in a modulation doped single quantum well was carefully measured using time integrated four-wave mixing (FWM) and two-dimensional Fourier transform (2DFT) spectroscopy. These are the first 2DFT measurements performed on a modulation doped single quantum well. The inhomogeneous and homogeneous excitonic line widths were obtained from the diagonal and cross-diagonal profiles of the 2DFT spectra. The laser excitation density and temperature were varied and 2DFT spectra were collected. A very rapid increase of the dephasing decay, and as a result, an increase in the cross-diagonal 2DFT linewidths with temperature was observed. Furthermore, the lineshapes of the 2DFT spectra suggest the presence of excitation induced dephasing and excitation induced shift.

Authors:

Paul, J. ^[1]; Dey, P. ^[1]; Tokumoto, T. ^[2]; Reno, J. L. ^[3]; Hilton, D. J. ^[2]; Karaiskaj, D. ^[1]

Univ. of South Florida, Tampa, FL (United States)
Univ. of Alabama at Birmingham, Birmingham, AL (United States)
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Publication Date:: Tue Oct 07 00:00:00 EDT 2014

Research Org.:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Org.:: USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 1083698

Alternate Identifier(s):: OSTI ID: 1223047

Report Number(s):: SAND-2013-4782J
Journal ID: ISSN 0021-9606; JCPSA6; 456279

Grant/Contract Number:: AC04-94AL85000

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Chemical Physics

Additional Journal Information:: Journal Volume: 141; Journal Issue: 13; Journal ID: ISSN 0021-9606

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 77 NANOSCIENCE AND NANOTECHNOLOGY; quantum wells; four wave mixing; polarization; doping; dephasing

Citation Formats


                    Paul, J., Dey, P., Tokumoto, T., Reno, J. L., Hilton, D. J., and Karaiskaj, D. Exploring two-dimensional electron gases with two-dimensional Fourier transform spectroscopy.  United States: N. p., 2014. 
Web.  doi:10.1063/1.4896777.

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                    Paul, J., Dey, P., Tokumoto, T., Reno, J. L., Hilton, D. J., & Karaiskaj, D. Exploring two-dimensional electron gases with two-dimensional Fourier transform spectroscopy.  United States.  https://doi.org/10.1063/1.4896777

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                    Paul, J., Dey, P., Tokumoto, T., Reno, J. L., Hilton, D. J., and Karaiskaj, D. Tue .  
"Exploring two-dimensional electron gases with two-dimensional Fourier transform spectroscopy".  United States.  https://doi.org/10.1063/1.4896777.  https://www.osti.gov/servlets/purl/1083698.

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@article{osti_1083698,

  title        = {Exploring two-dimensional electron gases with two-dimensional Fourier transform spectroscopy},

  author       = {Paul, J. and Dey, P. and Tokumoto, T. and Reno, J. L. and Hilton, D. J. and Karaiskaj, D.},

  abstractNote = {The dephasing of excitons in a modulation doped single quantum well was carefully measured using time integrated four-wave mixing (FWM) and two-dimensional Fourier transform (2DFT) spectroscopy. These are the first 2DFT measurements performed on a modulation doped single quantum well. The inhomogeneous and homogeneous excitonic line widths were obtained from the diagonal and cross-diagonal profiles of the 2DFT spectra. The laser excitation density and temperature were varied and 2DFT spectra were collected. A very rapid increase of the dephasing decay, and as a result, an increase in the cross-diagonal 2DFT linewidths with temperature was observed. Furthermore, the lineshapes of the 2DFT spectra suggest the presence of excitation induced dephasing and excitation induced shift.},

  doi          = {10.1063/1.4896777},

  journal      = {Journal of Chemical Physics},

  number       = 13,

  volume       = 141,

  place        = {United States},

  year         = {Tue Oct 07 00:00:00 EDT 2014},

  month        = {Tue Oct 07 00:00:00 EDT 2014}

}

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Exploring two-dimensional electron gases with two-dimensional Fourier transform spectroscopy

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