5Raine K W, Penfold A B. Instrument for Measuring the Thermal Coefficient of Refractive Index in the Infrared [ J]. Journal of Physics E: Scientific Instruments, 1985, 18 : 593 - 597.
6Kelein C A. Optical Distortion Coefficients of High Power Laser Window[ J ]. Optical Engineering, 1990, 29 (4) : 343 - 350.
7AU R H. Optical Window Systems [ C ]//Proceeding of SPIE, 1990,644:243 -253.