Nanosecond modulation of thermal emission

Daniel Wasserman

doi:10.1038/s41377-019-0179-1

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Nanosecond modulation of thermal emission

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- Nanosecond modulation of thermal emission
- Light: Science & Applications Vol. 8, Issue 4, Pages: 459-461(2019)
- Affiliations：
  
  Department of Electrical and Computer Engineering, University of Texas Austin, Austin, TX 78758, USA
- Author bio：
  
  Daniel Wasserman (dw@utexas.edu)
- Funds：
- DOI：10.1038/s41377-019-0179-1
  CLC：
- Published：2019，
  
  Published Online：24 July 2019，
- Accepted：
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Wasserman, D. Nanosecond modulation of thermal emission. Light: Science & Applications, 8, 459-461 (2019).
DOI：

Wasserman, D. Nanosecond modulation of thermal emission. Light: Science & Applications, 8, 459-461 (2019). DOI： 10.1038/s41377-019-0179-1.

摘要

Abstract

Femtosecond laser pulses are used to modulate the thermal emission from semiconductor materials at the nanosecond timescale. A visible-frequency laser photoexcites energetic free carriers in intrinsic Si and GaAs wafers. As these free carriers return to equilibrium

they not only emit thermal radiation on a picosecond time scale but also modulate the semiconductor thermal emission on a nanosecond to microsecond time scale

offering a novel route towards ultrafast infrared optical pulses.

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references

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Kim, M. et al. Interband cascade laser emitting atλ= 3.75 μm in continuous wave above room temperature.Appl. Phys. Lett.92, 191110 (2008)..

Tittel, F. K., Richter, D.&Fried, A. Mid-infrared laser applications in spectroscopy. inSolid-State Mid-Infrared Laser Sources(eds Sorokina, I. T.&Vodopyanov, K. L.) 458-529 (Springer, Berlin, Heidelberg, 2003).

Hudson, D. D. et al. Toward all-fiber supercontinuum spanning the mid-infrared.Optica4, 1163-1166 (2017)..

Mason, J. A., Smith, S.&Wasserman, D. Strong absorption and selective thermal emission from a midinfrared metamaterial.Appl. Phys. Lett.98, 241105 (2011)..

Xiao, Y. Z. et al. Nanosecond mid-infrared pulse generation via modulated thermal emissivity.Light.: Sci. Appl.8, 51 (2019)..

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