Antireflection coatings optimized for single-cycle THz pulses

Brunner, Fabian Dominik Jürg; Feurer, Thomas (2013). Antireflection coatings optimized for single-cycle THz pulses. Applied optics, 52(16), pp. 3829-3832. Optical Society of America 10.1364/AO.52.003829

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We show that a single-layer antireflection coating on a THz source of high refractive index can substantially increase the transmission of emitted THz pulses. Calculations indicate that the optimum coating thickness depends on the exact shape of the generated THz waveform and whether the transmitted waveform is to be optimized for the highest peak (temporal) amplitude, peak spectral amplitude, or pulse energy. We experimentally demonstrate a 15% increase in peak amplitude, a 33% increase in peak spectral amplitude, and a 48% increase in energy for a 100 μm thick fused silica AR coating on a lithium niobate crystal used as THz emitter.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Applied Physics

UniBE Contributor:

Brunner, Fabian Dominik Jürg and Feurer, Thomas

Subjects:

600 Technology > 620 Engineering

ISSN:

0003-6935

Publisher:

Optical Society of America

Language:

English

Submitter:

Martin Frenz-Lips

Date Deposited:

16 Sep 2014 15:07

Last Modified:

06 Dec 2014 03:07

Publisher DOI:

10.1364/AO.52.003829

BORIS DOI:

10.7892/boris.52968

URI:

https://boris.unibe.ch/id/eprint/52968

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