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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 23 — Aug. 10, 2013
  • pp: 5640–5644

Reflective terahertz imaging with the TEM01 mode laser beam

Irmantas Kašalynas, Rimvydas Venckevičius, Laurynas Tumonis, Bogdan Voisiat, Dalius Seliuta, Gintaras Valušis, and Gediminas Račiukaitis  »View Author Affiliations

Applied Optics, Vol. 52, Issue 23, pp. 5640-5644 (2013)

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Reflective terahertz imaging with a first-order Hermite–Gaussian laser beam was experimentally investigated. High spatial resolution targets prepared by direct laser microprocessing were used to evaluate the performance. The reflection imaging system at 2.524 THz frequency demonstrated up to diffraction limited resolution using the single focusing mirror with the numerical aperture not smaller than 0.6. The TEM 01 mode laser beam was also applied for practical samples such as silicon solar cell terahertz (THz) imaging. It is shown that usage of appropriate optics enables us to obtain high-quality THz images with the multimode laser beam.

© 2013 Optical Society of America

OCIS Codes
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(120.4820) Instrumentation, measurement, and metrology : Optical systems
(140.3460) Lasers and laser optics : Lasers
(110.6795) Imaging systems : Terahertz imaging

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: April 18, 2013
Manuscript Accepted: June 23, 2013
Published: August 5, 2013

Irmantas Kašalynas, Rimvydas Venckevičius, Laurynas Tumonis, Bogdan Voisiat, Dalius Seliuta, Gintaras Valušis, and Gediminas Račiukaitis, "Reflective terahertz imaging with the TEM01 mode laser beam," Appl. Opt. 52, 5640-5644 (2013)

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