Infrared-transmitting range

Given these special properties, this high-performance material has been successfully used for a variety of applications such as telescope mirror blanks in precision optics and infrared-transmitting range tops (Section 4.3.1). This glass-ceramic has also been successfiilly mass produced for household applications such as cookware and woodstove windows (Section 4.2). 

Optical Properties. The optical transmission of vitreous siUca is influenced by impurities and the forming process. Ultrapure vitreous siUca has the abihty to transmit from the deep ultraviolet, through the visible, and into the near-infrared spectral range. 

The major absorbers of infrared radiation in the atmosphere are HjO, CO2, and O3. The infrared wavelength ranges of 2-2.5 pm, 3-5 pm, and 8-12 pm are known as atmospheric windows. The radiative energies transmitted from the Sun to the Earth s surface within these atmospheric windows are shown in Table 12.3. 

Because the ion-assisted processes enable deposition at temperatures less than 100°C, deposition of diamond like coatings has been attempted on a wide range of substrates, e.g., stainless steel, Copper, ceramics,optical materials (plastics, polymers and polycarbonates),glasses,quartz, sapphire,infrared-transmitting optical materials such as germanium, zinc sulfide and zinc selenide, and a variety of electronic grade materials. Although thin films can be produced... 

Table3A-29 Property ranges of various infrared-transmitting glass types...

Applications include transparent cookware (Visions , thermal expansion = 7 x 10 V°C), optical materials (e.g., ring-laser gyroscopes), telescope mirror blanks (Zerodur ), infrared-transmitting electric range tops, wood-stove windows, fire door glazing... 

CSM has coupled the FBRM with a second probe, the particle video microscope, PVM (Lasentec/Mettler Toledo), which consists of six illuminating near-infrared lasers (850 nm) that are transmitted into the sample. While the FBRM provides precise quantitative tracking of the chord lengths, the PVM probe provides qualitative images of the hydrate particle size and degree of agglomeration. The size range scale of hydrate particles that can be measured with the PVM probe is 10-300 i,m. 

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