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Works (12)

Advancing terahertz photomixers through the integration of photoconductive antennas with optical waveguides

APL Photonics
2025-03-01 | Journal article
DOI: 10.1063/5.0246801
Contributors: M. Deumer; S. Nellen; S. Berrios; S. Breuer; S. Keyvaninia; L. Liebermeister; M. Schell; R. B. Kohlhaas
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Crossref

Extreme Ultra‐Wideband Optoelectronic Frequency‐Modulated Continuous‐Wave Terahertz Radar

Laser & Photonics Reviews
2023-11 | Journal article
DOI: 10.1002/lpor.202300396
Contributors: Shiva Mohammadzadeh; Andreas Keil; Michael Kocybik; Lauri Maximilian Schwenson; Lars Liebermeister; Robert Kohlhaas; Björn Globisch; Georg von Freymann; Jörg Seewig; Fabian Friederich
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Estimating Thoracic Movement with High-Sampling Rate THz Technology

Sensors
2023-05-31 | Journal article
DOI: 10.3390/s23115233
Contributors: Christoph Hoog Antink; Romina Schulz; Maurice Rohr; Konstantin Wenzel; Lars Liebermeister; Robert Kohlhaas; Sascha Preu
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A Terahertz Fast-Sweep Optoelectronic Frequency-Domain Spectrometer: Calibration, Performance Tests, and Comparison with TDS and FDS

Applied Sciences
2022-08-18 | Journal article
DOI: 10.3390/app12168257
Contributors: Janis Kutz; Lars Liebermeister; Nico Vieweg; Konstantin Wenzel; Robert Kohlhaas; Mira Naftaly
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Terahertz Multilayer Thickness Measurements: Comparison of Optoelectronic Time and Frequency Domain Systems

Journal of Infrared, Millimeter, and Terahertz Waves
2021-12-08 | Journal article
DOI: 10.1007/s10762-021-00831-5
Contributors: Lars Liebermeister; Simon Nellen; Robert B. Kohlhaas; Sebastian Lauck; Milan Deumer; Steffen Breuer; Martin Schell; Björn Globisch
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637 μ W emitted terahertz power from photoconductive antennas based on rhodium doped InGaAs

Applied Physics Letters
2020-09-28 | Journal article
DOI: 10.1063/5.0020766
Contributors: R. B. Kohlhaas; S. Breuer; L. Liebermeister; S. Nellen; M. Deumer; M. Schell; M. P. Semtsiv; W. T. Masselink; B. Globisch
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Fiber Coupled Transceiver with 6.5 THz Bandwidth for Terahertz Time-Domain Spectroscopy in Reflection Geometry

Sensors
2020-05-04 | Journal article
DOI: 10.3390/s20092616
Part of ISSN: 1424-8220
Source: Self-asserted source
Robert Kohlhaas
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Photoconductive terahertz detectors with 105 dB peak dynamic range made of rhodium doped InGaAs

Applied Physics Letters
2019-06-03 | Journal article
DOI: 10.1063/1.5095714
Part of ISSN: 0003-6951
Part of ISSN: 1077-3118
Source: Self-asserted source
Robert Kohlhaas

Ultra-fast, High-Bandwidth Coherent cw THz Spectrometer for Non-destructive Testing

Journal of Infrared, Millimeter, and Terahertz Waves
2019-03 | Journal article
DOI: 10.1007/s10762-018-0563-6
Part of ISSN: 1866-6892
Part of ISSN: 1866-6906
Source: Self-asserted source
Robert Kohlhaas

Improving the dynamic range of InGaAs-based THz detectors by localized beryllium doping: up to 70  dB at 3  THz

Optics Letters
2018-11-01 | Journal article
DOI: 10.1364/ol.43.005423
Part of ISSN: 0146-9592
Part of ISSN: 1539-4794
Source: Self-asserted source
Robert Kohlhaas

Rhodium doped InGaAs: A superior ultrafast photoconductor

Applied Physics Letters
2018-03-05 | Journal article
DOI: 10.1063/1.5016282
Part of ISSN: 0003-6951
Part of ISSN: 1077-3118
Source: Self-asserted source
Robert Kohlhaas

Terahertz quasi time-domain spectroscopy based on telecom technology for 1550 nm

Optics Express
2017-05-29 | Journal article
DOI: 10.1364/oe.25.012851
Part of ISSN: 1094-4087
Source: Self-asserted source
Robert Kohlhaas
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