Semiconductor based optically controlled THz optics

I-Chun Anderson Chen; Seong-wook Park; Canan Karaalioglu; Azza Meshal; Niel Vallestro; Rainer Martini

doi:10.1117/12.720053

4 May 2007 Semiconductor based optically controlled THz optics

I-Chun Anderson Chen, Seong-wook Park, Canan Karaalioglu, Azza Meshal, Niel Vallestro, Rainer Martini

Proceedings Volume 6549, Terahertz for Military and Security Applications V; 65490Q (2007) https://doi.org/10.1117/12.720053
Event: Defense and Security Symposium, 2007, Orlando, Florida, United States

Abstract

THz optics has experienced a tremendous increase in interest among the scientific community as better THz sources and detection schemes are discovered. With recent studies in THz modulation experiment using optically excited Si opens a new possibility in constructing THz optics using an optically controlled THz SLM. Thus, various patterns, such as zone lenses, could be optically constructed and tuned in real time for used in THz beam correction. For example, optically constructed Fresnel zone lenses on high-resistivity Si can be actively tuned for focal length and chromatic aberration, which are just some possible applications of this methodology. In this paper, we will present results for an optically controlled single pixeled THz semiconductor SLM for use as a modulator and discuss extensions to applications in zone lenses, diffraction gratings, and other optical components.

Citation Download Citation

I-Chun Anderson Chen, Seong-wook Park, Canan Karaalioglu, Azza Meshal, Niel Vallestro, and Rainer Martini "Semiconductor based optically controlled THz optics", Proc. SPIE 6549, Terahertz for Military and Security Applications V, 65490Q (4 May 2007); https://doi.org/10.1117/12.720053

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