Optical Properties

Photo: Zumtobel Staff

BOROFLOAT^® 33 is a clear and transparent colorless glass. The excellent transparency of BOROFLOAT^® 33 both in the ultraviolet and also in the visible and near infrared range of light makes it ideal as a cover panel for many types of floodlights, high-power spotlights and sunbeds (up to operating temperatures of 450 °C). Its extra low inherent fluorescence (light emission), combined with very good surface quality, flatness and homogeneity, opens up a wide-range of possible applications for BOROFLOAT^® 33 in optics, opto-electronics, photonics and analytical equipment.

Optical Properties of BOROFLOAT^® 33 diagrams:

Dispersion Transmission Transmission in the UV-Range Transmission in the UV-Range as a Function of Temperature Transmission in the IR-Range Transmission of BOROFLOAT^® 33 in Comparison with Borosilicate Crown Glass Reflection of BOROFLOAT^® 33 in Comparison with BOROFLOAT^® M Reflection of BOROFLOAT^®33 in Comparison with BOROFLOAT^® AR

Fluorescence Behavior of BOROFLOAT^®33

Some materials have the ability to emit electromagnetic radiation after being activated by high frequency short-wave radiation of high energy intensity. This behavior is called fluorescence. It depends on the material’s purity and its structural characteristics as well as the energy per pulse, pulse rate and the excitation wavelength of the radiation.

BOROFLOAT^® 33 is a highly transparent glass showing very weak fluorescence intensities in the visible light wavelength range.

Selected Standard Lasers and Related Wavelengths:

Wavelength (nm)	Laser Medium	Wavelength (nm)	Laser Medium	Wavelength (nm)	Laser Medium
308	XeCI	488	Ar	1047	Nd:YLF
325	HeCd	514.5	Ar	1053	Nd:YLF
337	N²	532	Nd:YAG	1064	Nd:YAG
350	XeF	632.8	HeNe	1153	HeNe
351.1	Ar	694.3	Ruby	1319	Nd:YAG
363.8	Ar	730-780	Alexandrite	1730	Er:YLF
427	N²	850	Er:YLF	2060	Ho:YLF
441.6	HeCd	905	GaAs	10640	CO₂

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