Nicolaus Copernicus University in Toruń
The setup will consist of an optical system and a vacuum system with a cryogenic source (i.e. a cryocculator). The optical system will supply the vacuum chamber with a laser beam with a very well controlled frequency, tunable in a broad wavelength range from 1.45 to 4.0 um (except the range of 2.07 – 2.19 um). The frequency of the light will be monitored using a highly accurate wavemeter (accuracy better than 0.003 cm-1). A two-stage cryocooler will be installed in the vacuum chamber, which will allow the tested sample to be cooled to a temperature of 4 K (or in a suitable configuration, even down to 2K). The first stage of the cryocooler will allow the sample to be cooled in the range of 20 – 40 K with a much greater heat load (tens of watts).
The system will enable precise spectroscopic examinations in the temperature range from cryogenic to room temperature. Measurements will be possible in a very broad spectral range of 1.45 to 4.0 um while maintaining a very high power of the laser beam, varying in the range of 1 – 3 W depending on the selected wavelength. The laser system works in a continuous (not pulsed) mode. The station will be constructed in such a way that it can be easily expanded and adapted to various applications (e.g. associating the optical system with an optical frequency comb).
0000-0001-7909-4473
