Radiation-induced transmission degradation of borosilicate crown optical glass from four different manufacturers

Abstract

Space-borne optical systems must be tolerant to radiation to guarantee that the required system performance is maintained during prolonged mission times. We show that the radiation hardness can be improved by selecting the relevant glass from a group of optical analogs. This conclusion is based on the study of gamma-radiation-induced absorption of crown glasses from group 517640 ͑glasses with n d Ϸ 1.517 and d Ϸ 64͒-BK7 and NBK7 ͑Schott͒, S-BSL7 ͑Ohara͒, BSC 517642 ͑Pilkington͒, and K8 ͑NITIOM͒. Our results show that whereas these glasses are optical analogs before irradiation, they behave differently during and after irradiation.

Impact of CdSe/ZnS quantum dot spectrum converters on InGaP/GaAs/Ge multi-junction solar cells

“…The effective area of a single solar cell was 0.3 cm 2 . 16 After the QD layer is attached, the decrease of transmittance at wavelength smaller than 500 nm due to the absorption of QDs can be clearly observed. By Yu et al's calibration data, 12 the QDs were with an average core diameter of 2.3 nm.…”