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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 6 — Mar. 17, 2008
  • pp: 4094–4105

7 GHz resolution waveguide THz spectroscopy of explosives related solids showing new features

N. Laman, S. Sree Harsha, D. Grischkowsky, and Joseph S. Melinger  »View Author Affiliations


Optics Express, Vol. 16, Issue 6, pp. 4094-4105 (2008)
http://dx.doi.org/10.1364/OE.16.004094


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Abstract

The vibrational modes of the explosive related solids 2,4- and 2,6-DNT have been measured with waveguide THz time-domain spectroscopy (THz-TDS) to unprecedented precision. Dramatic sharpening of spectral features upon cooling beyond 80 K to 12 K is observed, illustrating the high quality and alignment of the polycrystalline thin films. Many of the observed features have linewidths below 15 GHz. These linewidths are approximately 8 times narrower than for the corresponding measurements via conventional THz-TDS with cooled pellets. For the 2,4-DNT, the line narrowing resolved 19 absorption features compared to only 7 features with the corresponding pellet measurement.

© 2008 Optical Society of America

OCIS Codes
(130.2790) Integrated optics : Guided waves
(160.4890) Materials : Organic materials
(300.3700) Spectroscopy : Linewidth
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:
Spectroscopy

History
Original Manuscript: February 6, 2008
Revised Manuscript: March 7, 2008
Manuscript Accepted: March 7, 2008
Published: March 11, 2008

Citation
N. Laman, S. Sree Harsha, D. Grischkowsky, and Joseph S. Melinger, "7 GHz resolution waveguide THz spectroscopy of explosives related solids showing new features," Opt. Express 16, 4094-4105 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-6-4094


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