Tender For supply of short pass filter for visible wavelength range blocking greater then eual to tod5 761 1200nm , short pass filter for visible wavelength range blocking greater then eual to od5 506 1200nm , long pass filter for near ir range , offaxis parabolic mirror uv enhanced aluminium , concave mirror , optical chopper with chopper blade and controller , calcium fluoride caf2 crystal window , beta bbo crystal mounted in open ring holder thickness 0 point 1 mm , beta bbo crystal mounted in open ring holder thickness 1 mm , znte crystal mounted in open ring thickness 0.5 mm , znte crystal mounted in open ring thickness 0.2 mm , broadband thinfilm laser polarizer at 70 degree , z cut crystal quartz window for thz spectroscopy , hrfz silicon window plano plano