GEMINI
INTERFEROMETER
Broadband Spectroscopy
based on TWINS technology
Broadband spectroscopy
with high throughput
GEMINI Interferometer is the ultimate interferometer for Fourier Transform spectroscopy, from the UV to the MID-IR spectral range.
Based on the TWINS (Translating-Wedge-based Identical pulses eNcoding System) technology, GEMINI ensure unrivalled precision and reproducibility in a compact design. The interferometer can be easily added to any spectroscopy setup to measure the spectrum of the input light (either coherent or incoherent sources).
Explore the different experiments that can benefit from the GEMINI Interferometer, ranging from Time and Frequency Resolved Fluorescence (TRES) to Pump-Probe, from quantum applications to Raman spectroscopy.
Broad spectral coverage
Compact
Lightweight
Spectral Resolution
Clear Aperture
Look at more specifications
| VERSION | S | L |
|---|---|---|
| Spectral range | 400 – 2300 nm (Standard) 250 – 3500 nm (Ultra-broadband) 500 – 4200 nm (On request) | |
| Spectral Resolution @ 600 nm wavelength | 1.4 nm (see the Brochure for more details) | 0.7 nm (see the Brochure for more details) |
| Max. Delay @ 600 nm wavelength | from -100 fs to +700 fs | from -100 fs to +2 ps |
| Delay Stability | < 1 attosecond | |
| Modes of operation | Step Scan (The user can select the dwell time for each delay via software) | |
| Dimensions | 176 mm × 44 mm × 54.5 mm | |
| Weight | 500 g | |
A new version of the GEMINI Interferometer is under development in our labs. It will be super-broadband, covering the entire range from the VIS to 15 microns wavelength. This version will employ birefringent crystals made of Calomel from BBT – Materials Processing, Ltd. Stay Tuned!
Main applications
- Absorbrance / Transmittance
- Excitation-Emission Fluorescence (EEM)
- Time Resolved Emission Spectroscopy
- Quantum Applications
- Single Photon Spectroscopy
- Pump-Probe Spectroscopy
- Raman Spectroscopy
GEMINI Interferometer Video Tutorials
Dive deeper into the functionality and applications of the NIREOS GEMINI Interferometer with our comprehensive video tutorials. These technical guides illustrate the core principles of our patented TWINS technology, demonstrate practical setup procedures, and showcase how GEMINI seamlessly integrates into various spectroscopic experiments to deliver high-quality data.
GEMINI Interferometer Working Principle
GEMINI Interferometer for Time Resolved Fluorescence Emission Spectra (TRES)
GEMINI Interferometer for Excitation-Emission Maps (EEM)
Optional
Accessories
MF – SM adaptor
MF12×1 → SM1 (external thread) + SM05 (internal thread)
SM05 (internal thread)
MF – SM1 adaptor
MF12×1 → SM1 (internal thread)
MF – C adaptor
MF12×1 → C-mount (internal thread)
GM1 coupler
Tube Coupler, for optimal coupling between GEMINI Interferometer and SPIDER
Felix TCSPC
Cost-effective and plug&play TCSPC system, easy HW/SW integration with GEMINI, for TRES measurements.
Scientific papers
Find out more details regarding our technology in these scientific publications:
Fluorescence Measurements
The Curious Case of Dual Emission in 9,10-Bis(phenylethynyl)anthracene, Jakub K. Sowa, Colette M. Sullivan, Leon Otis, Benjamin J. G. Rousseau, Jussi Isokuortti, James Shee, Peter J. Rossky, Lea Nienhaus, Journal of the American Chemical Society (2026)
Integrated setup for time and spatially resolved micro-photoluminescence, M. Perlangeli; G. M. Pierantozzi; A. Fondacaro; P. Sander; E. Dobovicnik; F. Parmigiani; G. Rossi; G. Panaccione; F. Cilento; R. Cucini, AIP Publishing Rev. Sci. Instrum. 97, 023004 (2026)
Multiple Emission Peaks Challenge Polariton Condensation in Phenethylammonium-Based 2D Perovskite Microcavities, M. Gomez-Dominguez et al., ACS Photonics 2025, 12, 5, 2423–2431
Multidimensional fluorescence spectroscopy of wine using synchronous excitation/emission matrices and time-resolved fluorescence interferometric detection”, S. Mori et al., Methods Appl. Fluoresc. 12 045001, 2024.
Sustainable and Circular Management of Perovskite SolarCells via Green Recycling of Electron Transport Layer-CoatedTransparent Conductive Oxide, V. Larini et al., Adv. Funct. Mater., 2023.
Fluorescence decay enhancement and FRET inhibition in self-assembled hybrid gold CdSe/CdS/CdZnS colloidal nanocrystal supraparticles, V. Blondot et al., Opt. Express Vol. 31, No. 3 (2023).
An innovative strategic route to the green synthesis of CsPbBr3 films on rigid and flexible substrates, L. Sirna et al., Applied Surface Science 622 (2023).
A DNA-Stabilized Ag1812+ Cluster with Excitation-Intensity-Dependent Dual Emission, V. Ruck, Angew Chem Int Ed, (2023)
Time gated Fourier transform spectroscopy as a technique for disentangling short- and long-lived luminescence, Liisberg M.B., Nature Commun. Mater. 4, 57 (2023).
A step beyond in steady-state and time-resolved electro-optical spectroscopy: Demonstration of a customized simple, compact, low-cost, fiber-based interferometer system, G. Pica et al., Struct. Dyn. 9, 011101 (2022)
Manipulating Color Emission in 2D Hybrid Perovskites by Fine Tuning Halide Segregation: A Transparent Green Emitter, A. Zanetta et al., Advanced Materials (2021)
IS DISORDER BENEFICIAL IN PEROVSKITE-SENSITIZED SOLID-STATE UPCONVERSION? THE ROLE OF DBP DOPING IN RUBRENE: S. Wieghold et al., J. Phys. Chem. C (2020)
UNDERSTANDING THE EFFECT OF LIGHT AND TEMPERATURE ON THE OPTICAL PROPERTIES AND STABILITY OF MIXED-ION HALIDE PEROVSKITES: S. Wieghold et al., J. Mater. Chem. C (2020)
STOKES SHIFT MICROSCOPY BY EXCITATION AND EMISSION IMAGING: S. Krause and T. Vosch., Opt. Express 27, 8208-8220 (2019)
SINGLE-MOLECULE FLUORESCENCE: E. Thyrhaug et al., PNAS 116, 4064-4069 (2019)
TIME-RESOLVED FLUORESCENCE: A. Perri et al., Optics Express 26, 2270-2279 (2018)
FREQUENCY-RESOLVED EXCITATION-EMISSION FLUORESCENCE: A. Perri et al., Optics Express 25, A483-A490 (2017)
Quantum and Entangled Photons
Hyperspectral imaging of downconverted photons in angle phase-matched nonlinear crystals, Evan J. Kumar, Lorenzo Uboldi, Cristian Manzoni, Giulio Cerullo, and Ajay Ram Srimath Kandada. Opt. Lett. 51, 841-844 (2026)
Entangled-photon time- and frequency-resolved optical spectroscopy, R. Alvarez-Mendoza et al. 2505.02940v1 [quant-ph] 5 May 2025
Measurement principles for quantum spectroscopy of molecular materials with entangled photons, A.R.S. Kandada et al., J. Chem. Phys. 2023
Pump-Probe & Coherent Raman Scattering
TUNING THE ULTRAFAST RESPONSE OF FANO RESONANCES IN HALIDE PEROVSKITE NANOPARTICLES: P. Franceschini et al., ACS Nano 2020
COHERENT RAMAN SCATTERING: V. Kumar et al., APL Photonics 3, 092403 (2018)
BROADBAND PUMP-PROBE SPECTROSCOPY: F. Preda et al., Optics Letters 41, 2970-2973 (2016)
COHERENT RAMAN SPECTROSCOPY: J. Réhault et al., Optics Express 23, 25235-25246 (2015)
Others
Ultrafast all-optical second harmonic wavefront shaping, Sinelnik, A., Lam, S.H., Coviello, F. et al., Nat Commun 15, 2507 (2024).
Stimulated Emission from hexagonal silicon-germanium nanowires, van Tilburg, M.A.J., Commun Phys 7, 328 (2024)
Turning On TTA: Aggregation-Induced Energy Landscape Modification, C. Sullivan et al., 2023.
High-Harmonic Generation Enhancement with Graphene Heterostructures, P. Walther et al., Adv. Optical Mater., 2022
TIME-GATED INTERFEROMETRIC DETECTION INCREASES RAMAN SCATTERING TO FLUORESCENCE SIGNAL RATIO IN BIOLOGICAL SAMPLES, N. Ksantini et al., Journal of Biophotonics (2021).
ALL-OPTICAL POLARIZATION AND AMPLITUDE MODULATION OF SECOND-HARMONIC GENERATION IN ATOMICALLY THIN SEMICONDUCTORS, S. Klimmer et al., Nature Photonics (2021).
TIME-DOMAIN PHOTOCURRENT SPECTROSCOPY: L. Wolz et al., Rev. Sci. Instrum. 91, 123101 (2020)
LINEAR AND NONLINEAR SPECTROSCOPY BY A COMMON-PATH BIREFRINGENT INTERFEROMETER: F. Preda et al., IEEE Journal of Selected Topics in Quantum Electronics 23, 8700209 (2017)
It goes great with…
The GEMINI can be naturally coupled with the SPIDER Photodetector, to obtain a 320-1700 nm Spectrometer.
Fluorescent Lamp Spectrum, measured with GEMINI+SPIDER.
Any question?
What is the maximum allowed sensor size for the GEMINI-X?
Optimal compatibility with sensor with a maximum diagonal of 20 mm. For larger sensors, slight vignetting may happen. Contact us at info@nireos.com for further information.
Which sensors are compatible with GEMINI-X?
List of the implemented cameras:
- Basler: acA1920-155um, a2A1280-125umSWIR, a2A2048-110umSWIR
- IDS: UI306xCP-M
- NIT: WiDy SenS 640 V-ST
- Allied Vision: Goldeye G-034 XSWIR 2.2 TEC2, Goldeye G-130 VSWIR TEC1, Alvium 1800 U-812 UV, Alvium G1-234
- Opto Engineering: ITA13-GM-10C-SWIR
- Excelitas: pco.pixelfly 1.3 SWIR, pco.edge 9.4 bi CLHS
- XIMEA: MJ042MR-GP-P6-BSI
- Teledyne: 01-KINETIX-M-C
- Hamamatsu: ORCA-Quest C15550-20UP, ORCA-Quest 2 C15550-22UP, ORCA FUSION C14440-20UP
- Andor Technology: iXon Ultra 888 EMCCD
Is your camera not on the list? Contact us at info@nireos.com and let us know the exact model for more information.
Can GEMINI-X be paired with any sensor?
Yes, but it may require software integration. For more information, please contact NIREOS at info@nireos.com
Do you want to know more about GEMINI and our other high tech solutions in Spectroscopy and Photonics?
Check out our FAQs page
NIREOS products are marketed and sold worldwide through our local offices and a global distribution network.
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