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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 18 — Sep. 4, 2006
  • pp: 8311–8316

Observation of THz to near-infrared parametric conversion in ZnGeP2 crystal

Yujie J. Ding and Wei Shi  »View Author Affiliations


Optics Express, Vol. 14, Issue 18, pp. 8311-8316 (2006)
http://dx.doi.org/10.1364/OE.14.008311


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Abstract

We observed a THz parametric conversion in which a near-infrared laser beam was mixing with a THz wave to generate a radiation in the near-infrared region (i.e. an upconverted signal) through difference-frequency generation phase-matched in a ZnGeP2 crystal. By measuring the upconverted signal, we deduced the characteristics of the THz pulses participating in the frequency mixing. Specifically, we determined the range of the incident wavelengths, the minimum detectable energy per pulse, and the average linewidth of the THz pulses as 91–139 μm, 276 pJ, and 0.36 cm-1, respectively.

© 2006 Optical Society of America

OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.7220) Nonlinear optics : Upconversion

ToC Category:
Nonlinear Optics

History
Original Manuscript: June 15, 2006
Revised Manuscript: August 12, 2006
Manuscript Accepted: August 12, 2006
Published: September 1, 2006

Citation
Yujie J. Ding and Wei Shi, "Observation of THz to near-Infrared parametric conversion in ZnGeP2 crystal," Opt. Express 14, 8311-8316 (2006)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-14-18-8311


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References

  1. W. Shi and Y. J. Ding, "Chemical identification based on direct measurement of absorption spectrum by frequency-tuning monochromatic THz source," Laser Phys. Lett. 1, 560-564 (2004). [CrossRef]
  2. W. Shi, Y. J. Ding, and P. G. Schunemann, "Coherent terahertz waves based on difference-frequency generation in an annealed zinc-germanium phosphide crystal: Improvements on tuning ranges and peak powers," Opt. Commun. 233, 183-189 (2004). [CrossRef]
  3. See e.g., H. R. Fetterman, P. E. Tannenwald, B. J. Clifton, C. D. Parker, W. D. Fitzgerld, and N. R. Erickson, "Far-ir heterodyne radiometric measurements with quasioptical Schottky diode mixers," Appl. Phys. Lett. 33, 151-154 (1978). [CrossRef]
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  5. W. Shi and Y. J. Ding, "A monochromatic and high-power THz source tunable in the ranges of 2.7-38.4 μm and 58.2-3540 μm for variety of potential applications," Appl. Phys. Lett. 84, 1635-1637 (2004). [CrossRef]
  6. R. W. Boyd, Nonlinear Optics (Academic, New York, 2003).
  7. W. Shi, Y. J. Ding, N. Fernelius, and F. K. Hopkins, "Observation of difference-frequency generation by mixing of terahertz and near-infrared laser beams in a GaSe crystal," Appl. Phys. Lett. 88, 101101/1-3 (2006). [CrossRef]
  8. I. B. Zotova and Y. J. Ding, "Spectral measurements of two-photon absorption coefficients for CdSe and GaSe crystals," Appl. Opt. 40, 6654-6658 (2001). [CrossRef]

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