GEMINI – Ultra-Stable Interferometer

GEMINI is the ultimate interferometer providing unrivaled accuracy and reproducibility in controlling the temporal delay between the two replicas of the input light. It can be employed with Nireos’ included drivers and software to measure the spectrum of the input light (either coherent or incoherent source) based on the Fourier-transform approach, as in any FTIR spectrometer.

The Gemini is rugged, robust, and insensitive to vibrations, thanks to the patented common-path geometry. The Gemini comes factory-assembled and aligned for easy turn-key integration into any existing setup, requiring no particular optical alignment procedure. The device is ultra-compact (176 x 44 x 54.5 mm) and lightweight (approx.400 gm).

With broad spectral coverage from 400nm to 2300nm and optional ultra-broadband coverage from 250 to 3500 nm, the Gemini provides continuous spectra, with a virtually unlimited number of spectral bands. Featuring a 1-cm clear aperture without any grating nor input/output aperture slits means the Gemini has an unprecedented level of throughput.

Scan range and spectral resolution are selectable by the user, who can start with quick measurements to have an initial look at the spectra, and then prolong the data acquisition to increase both the signal-to-noise ratio and the spectral resolution, down to <1 nm in the visible.

• Interferometry
• Generation of pulse pairs
• Time- and frequency-resolved  fluorescence
• Pump-probe spectroscopy
• Coherent Raman spectroscopy
• Fluorescence Excitation-Emission Maps
• Characterization of single molecules