Transmission Features of Frequency-Selective Components in the Far Infrared Determined by Terahertz Time-Domain Spectroscopy
Applied Optics, Vol. 38, Issue 18, pp. 3961-3967 (1999)
http://dx.doi.org/10.1364/AO.38.003961
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Abstract
Transmission and phase-shift characteristics of dichroic high-pass filters with cutoff frequencies as high as 1.11 THz and of a cross-shaped grid bandpass filter with a resonance frequency of 280 GHz were measured with an electro-optic sampling terahertz time-domain spectrometer operating between 0.1 and 2 THz. Good agreement with transmission theories is found. We also compare the transmission performance of cascaded dichroic filters with that of cross-shaped grid bandpass filters. Both types of bandpass filter permit frequency-selective ultrafast experiments in the far-infrared spectral region. In the millimeter and the submillimeter wavelength regions, which are difficult to access by conventional means, knowledge of the frequency response of frequency-selective components is important for applications in frequency mixing, multiplying, and multiplexing in quasi-optical systems.
© 1999 Optical Society of America
OCIS Codes
(240.7040) Optics at surfaces : Tunneling
(300.6370) Spectroscopy : Spectroscopy, microwave
(300.6500) Spectroscopy : Spectroscopy, time-resolved
(300.6530) Spectroscopy : Spectroscopy, ultrafast
(320.2250) Ultrafast optics : Femtosecond phenomena
Citation
Carsten Winnewisser, Frank Lewen, Jochen Weinzierl, and Hanspeter Helm, "Transmission Features of Frequency-Selective Components in the Far Infrared Determined by Terahertz Time-Domain Spectroscopy," Appl. Opt. 38, 3961-3967 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-18-3961
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