dorsal/arxiv
View SchemaFiber-coupled Antennas for Ultrafast Coherent Terahertz Spectroscopy in Low Temperatures and High Magnetic Fields
| Authors | S. A. Crooker |
|---|---|
| Categories | |
| ArXiv ID | physics/0204016 |
| URL | https://arxiv.org/abs/physics/0204016 |
| DOI | 10.1063/1.1498904 |
Abstract
For the purposes of measuring the high-frequency complex conductivity of correlated-electron materials at low temperatures and high magnetic fields, a method is introduced for performing coherent time-domain terahertz spectroscopy directly in the cryogenic bore of existing dc and pulsed magnets. Miniature fiber-coupled THz emitters and receivers are constructed and are demonstrated to work down to 1.5 Kelvin and up to 17 Tesla, for eventual use in higher-field magnets. Maintaining the sub-micron alignment between fiber and antenna during thermal cycling, obtaining ultrafast (${<200}$~fs) optical gating pulses at the end of long optical fibers, and designing highly efficient devices that work well with low-power optical gating pulses constitute the major technical challenges of this project. Data on a YBCO superconducting thin film and a high mobility 2D electron gas is shown.
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"abstract": "For the purposes of measuring the high-frequency complex conductivity of\ncorrelated-electron materials at low temperatures and high magnetic fields, a\nmethod is introduced for performing coherent time-domain terahertz spectroscopy\ndirectly in the cryogenic bore of existing dc and pulsed magnets. Miniature\nfiber-coupled THz emitters and receivers are constructed and are demonstrated\nto work down to 1.5 Kelvin and up to 17 Tesla, for eventual use in higher-field\nmagnets. Maintaining the sub-micron alignment between fiber and antenna during\nthermal cycling, obtaining ultrafast (${\u003c200}$~fs) optical gating pulses at the\nend of long optical fibers, and designing highly efficient devices that work\nwell with low-power optical gating pulses constitute the major technical\nchallenges of this project. Data on a YBCO superconducting thin film and a high\nmobility 2D electron gas is shown.",
"arxiv_id": "physics/0204016",
"authors": [
"S. A. Crooker"
],
"categories": [
"physics.ins-det",
"physics.optics"
],
"doi": "10.1063/1.1498904",
"title": "Fiber-coupled Antennas for Ultrafast Coherent Terahertz Spectroscopy in Low Temperatures and High Magnetic Fields",
"url": "https://arxiv.org/abs/physics/0204016"
},
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