In the last decade, white-light illuminated Fabry-P\'erot interferometers wave been established as a widely used, relatively simple, reliable, and cost-effective way to precisely calibrate high-resolution echelle spectrographs. However, Terrien et al. (2021) recently reported chromatic drift of interferometer installed at Habitable-zone Planet Finder spectrograph. particular, they found that va...

Because of the major impact of the radioactive materials on the environment, their characterization methods have to be well defined, complete and agreed by the control bodies and the civil society. The paper presents measurements of certified etalon gamma emitting radiation sources, in order to perform the energy and the efficiency calibration of a new HPGe spectrometric system, and to determin...

The photo-Hall technique has been used to investigate the properties of the InSb optical absorption band-edge. An accurate theoretical explanation of the linear absorption results is given, together with new data on the nonlinear aspects of the band-tail. A value of 1.1 x 10-18 for a has been calculated by monitoring the carrier generation during bistability.

A wavelength reference based on a temperature-tunable etalon made from silicon is presented. The device provides a compact and cost-effective solution. Furthermore, it is fully automated and operational in a broad wavelength range from 1.3 μm to 1.7 μm. The device needs a single characterization and operates without an absolute wavelength reference. The wavelength accuracy is found to be better...

Biotin modified polycationic polymers are capable of penetrating the Au overlayer of poly(N-isopropylacrylamide)-co-acrylic acid microgel-based etalons. Once penetrated, the polycations crosslink the polyanionic microgels, causing them to collapse, resulting in a concomitant blue shift of the spectral peaks in the reflectance spectrum. We show that the magnitude of the blue shift depends on the...