Knorr, Matthias and Steinleitner, Philipp and Raab, Juergen and Gronwald, Imke and Merkl, Philipp and Lange, Christoph and Huber, Rupert (2018) Ultrabroadband etalon-free detection of infrared transients by van-der-Waals contacted sub-10-mu m GaSe detectors. OPTICS EXPRESS, 26 (15). pp. 19059-19066. ISSN 1094-4087,
Full text not available from this repository. (Request a copy)Abstract
We demonstrate ultrabroadband electro-optic detection of multi-THz transients using mechanically exfoliated flakes of gallium selenide of a thickness of less than 10 mu m, contacted to a diamond substrate by van-der-Waals bonding. While the low crystal thickness allows for extremely broadband phase matching, the excellent optical contact with the index-matched substrate suppresses multiple optical reflections. The high quality of our structure makes our scheme suitable for the undistorted and artifact-free observation of electromagnetic waveforms covering the entire THz spectral range up to the near-infrared regime without the need for correction for the electro-optic response function. With the current revolution of chemically inert quasi-two-dimensional layered materials, we anticipate that exfoliated vander-Waals materials on index-matched substrates will open new flexible ways of ultrabroadband electro-optic detection at unprecedented frequencies. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | TERAHERTZ SPECTROSCOPY; REPETITION RATE; PULSES; HETEROSTRUCTURES; GENERATION; CRYSTALS; SENSORS; MATTER; LIGHT; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Huber > Group Rupert Huber |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 12 Feb 2020 13:22 |
| Last Modified: | 12 Feb 2020 13:22 |
| URI: | https://pred.uni-regensburg.de/id/eprint/14215 |
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