We apply the standard photovoltaic technique of texturing to reduce the reflectivity of silicon cryogenic calorimetric light detectors. In the case of photons with random incidence angles, absorption is compatible with the increase in surface area. For the geometrically thin detectors studied, energy resolution from athermal phonons, dominated by position dependence, is proportional to the surface-to-volume ratio. With the CaWO4 scintillating crystal used as light source, the time constants of the calorimeter should be adapted to the relatively slow light-emission times.
@article{arxiv.physics/0307042,
title = {A Textured Silicon Calorimetric Light Detector},
author = {P. C. F. Di Stefano and T. Frank and G. Angloher and M. Bruckmayer and C. Cozzini and D. Hauff and F. Proebst and S. Rutzinger and W. Seidel and L. Stodolsky and J. Schmidt},
journal= {arXiv preprint arXiv:physics/0307042},
year = {2007}
}