Instrumental Platform Nanoelectronics, Metrology & Terahertz

Project Leader : CONSEJO Christophe
Project Manager: BONNET Laurent

Research conducted within the METQ, TEST, and TQNS teams relies on two main experimental platforms:

Nanoelectronics and Metrology Platform
This platform provides experimental setups dedicated to the study of electronic transport under low excitation levels and ultra-low noise conditions (<3 nV/sqrt(Hz) – BP<100 kHz).
Samples can be subjected to high magnetic fields (up to 16 T) and extreme temperatures (from 40 mK to 800 K).
Terahertz Platform
The available tools enable both fundamental research, using THz spectroscopy techniques, and the development of innovative sensors and emitters.
The platform is also used for applied research, combining THz imaging and spectroscopy with agronomic studies.

Oxford cryostat equipped with a 16 T magnet and a variable-temperature insert (1.7 K–300 K), coupled to a Bruker Vertex 80V spectrometer.
Cryogenic “cryofree” magneto-optical system, equipped with a split superconducting coil (6 T), variable temperature (1.7 K–300 K), and diamond and TPX optical windows.
Janis “cryofree” optical cryostat, with variable temperature (1.7 K–300 K), fitted with quartz and TPX optical windows.
Terahertz time-domain spectrometer (TDS) – Teraview Terapulse 4000, operating in the 60 GHz–4 THz spectral range (2–133 cm⁻¹) with a typical resolution of 1.7 GHz.
Electronic AMC VDi sources covering the 70 GHz–1 THz frequency range, consisting of frequency synthesizers, amplifier, and multiplier chains.
High-power fixed-frequency sources (>1 mW) at 140 GHz, 292 GHz, and 610 GHz.
High-power quantum cascade lasers (QCLs) operating at fixed frequencies between 2.5 and 4.8 THz.

Oxford cryostat equipped with two superimposed superconducting coils (8 T and 14 T) — a unique configuration worldwide — dedicated to Landau emission experiments (TEASER project).
“Concept Soudure” dilution unit, with a base temperature of 40 mK, insertable into the above cryostat.
Cryogenic cryostat with a 13 T superconducting magnet, a variable-temperature insert (1.7 K–300 K) and/or a helium-3 insert with a base temperature of 300 mK.
Janis “cryofree” system, operating between 10 K and 800 K, coupled to a 1 T electromagnet.
A glove box transfer/system enables the fabrication of heterostructures based on lamellar 2D materials (graphene, hBN, transition metal dichalcogenides).
Sample fabrication (growth, lithography) is either performed in collaboration with other teams or carried out in the cleanroom of the Microelectronics Technology Center (CTM) in Montpellier.