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Terahertz single pixel imaging with an optically controlled dynamic spatial light modulator.

Publication ,  Journal Article
Shrekenhamer, D; Watts, CM; Padilla, WJ
Published in: Optics express
May 2013

We present a single pixel terahertz (THz) imaging technique using optical photoexcitation of semiconductors to dynamically and spatially control the electromagnetic properties of a semiconductor mask to collectively form a THz spatial light modulator (SLM). By co-propagating a THz and collimated optical laser beam through a high-resistivity silicon wafer, we are able to modify the THz transmission in real-time. By further encoding a spatial pattern on the optical beam with a digital micro-mirror device (DMD), we may write masks for THz radiation. We use masks of varying complexities ranging from 63 to 1023 pixels and are able to acquire images at speeds up to 1/2 Hz. Our results demonstrate the viability of obtaining real-time and high-fidelity THz images using an optically controlled SLM with a single pixel detector.

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Published In

Optics express

DOI

EISSN

1094-4087

ISSN

1094-4087

Publication Date

May 2013

Volume

21

Issue

10

Start / End Page

12507 / 12518

Related Subject Headings

  • Terahertz Imaging
  • Semiconductors
  • Optics
  • Optical Devices
  • Light
  • Image Enhancement
  • 5102 Atomic, molecular and optical physics
  • 4009 Electronics, sensors and digital hardware
  • 4006 Communications engineering
  • 1005 Communications Technologies
 

Citation

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Shrekenhamer, D., Watts, C. M., & Padilla, W. J. (2013). Terahertz single pixel imaging with an optically controlled dynamic spatial light modulator. Optics Express, 21(10), 12507–12518. https://doi.org/10.1364/oe.21.012507
Shrekenhamer, David, Claire M. Watts, and Willie J. Padilla. “Terahertz single pixel imaging with an optically controlled dynamic spatial light modulator.Optics Express 21, no. 10 (May 2013): 12507–18. https://doi.org/10.1364/oe.21.012507.
Shrekenhamer D, Watts CM, Padilla WJ. Terahertz single pixel imaging with an optically controlled dynamic spatial light modulator. Optics express. 2013 May;21(10):12507–18.
Shrekenhamer, David, et al. “Terahertz single pixel imaging with an optically controlled dynamic spatial light modulator.Optics Express, vol. 21, no. 10, May 2013, pp. 12507–18. Epmc, doi:10.1364/oe.21.012507.
Shrekenhamer D, Watts CM, Padilla WJ. Terahertz single pixel imaging with an optically controlled dynamic spatial light modulator. Optics express. 2013 May;21(10):12507–12518.

Published In

Optics express

DOI

EISSN

1094-4087

ISSN

1094-4087

Publication Date

May 2013

Volume

21

Issue

10

Start / End Page

12507 / 12518

Related Subject Headings

  • Terahertz Imaging
  • Semiconductors
  • Optics
  • Optical Devices
  • Light
  • Image Enhancement
  • 5102 Atomic, molecular and optical physics
  • 4009 Electronics, sensors and digital hardware
  • 4006 Communications engineering
  • 1005 Communications Technologies