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1.
Opt Express ; 24(3): 2590-5, 2016 Feb 08.
Artículo en Inglés | MEDLINE | ID: mdl-26906831

RESUMEN

Optical properties of 4H-SiC were measured using time-domain and Fourier transform spectroscopy in the range of 0.1-20 THz. A high-transparency region was found between <0.1-10 THz. Based on the obtained data and published results, the refractive indices for o-wave and e-wave were approximated in the form of Sellmeier equations for the entire transparency range. Phase matched frequency conversion was found to be possible at wavelengths from the visible through the mid-IR and further into the far-IR (THz) region beyond 17 µm. Extremely low absorption coefficient, high damage threshold, and the possibility of phase matching make this material highly suited for high power THz optics and generation.

2.
Appl Opt ; 52(19): 4433-7, 2013 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-23842236

RESUMEN

A range of natural and artificial textiles are examined using terahertz time-domain spectroscopy. Different types of textiles are shown to have different terahertz optical properties, which may be employed for textile identification and to combat textile counterfeiting.

3.
Semin Dermatol ; 10(2): 121-2, 1991 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-1713780

RESUMEN

Automated teaching methods permit reliable dissemination of important information to patients. With the professional help of an audiovisual department, a physician can get information to patients in a bright, amusing, and reproducible manner. At the same time, the physician is free to perform other tasks.


Asunto(s)
Acné Vulgar , Recursos Audiovisuales , Educación del Paciente como Asunto/métodos , Enseñanza/métodos , Diseño de Equipo , Humanos
4.
JAMA ; 195(10): 878; author reply 878, 1966 Mar 07.
Artículo en Inglés | MEDLINE | ID: mdl-12608192
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