Windows and domes: past, present, and future

Fabrication of transparent La-doped Y2O3 ceramics using different La2O3 precursors

“…Owing to their low infrared emissivity at both ambient and elevated temperatures, Y 2 O 3 ceramics are considered as a candidate material for use in hypersonic guided-missile windows and domes [4][5][6][7]. The use of La 2 O 3 permits the attainment of ceramics with high optical quality and good mechanical properties by eliminating pores and inhibiting grain growth during the Y 2 O 3 ceramic sintering process [8][9][10].…”

Methods for prediction of refractive index in glasses for the infrared

“…[56][57][58][59] Once phonons are properly considered, wavelength-and temperature-dependent optical properties can also be calculated. [60][61][62][63][64][65] The downside to the phonon-type calculations is that each material requires a fit of measured data to establish the coefficients for the phonon oscillator parameters.…”

Analysis of Thermal Shock and Stress with Infrared Optical Domes

“…The development and application of infrared and optical electronics technology has higher requirement to materials. Because new generation optical equipments such as infrared-guided missiles, infrared viewer, thermal infrared imager, infrared radiation thermometer, laser raging device and laser aiming sight sometimes work at the very severe conditions, the infrared window material and domes must be used in the outside of the optoelectronics and detection system to protect them to avoid being damaged and to work normally [3,4]. In order to meet the requirement of infrared windows or domes materials of high speed missiles, the infrared optical materials must have the combination properties of optical, physics, mechanism, and chemical [5,6].…”