More exacting requirements in the laser, electro-optical and semiconductor industries have fueled the increasing demand for synthetic fused silica, the purest glass known to man. Unlike fused quartz, which originates from mined, natural quartz or silica sand, fused silica is produced synthetically by the vapor phase hydrolysis of a silicon halide. The resulting product is vitreous, non-crystalline, of the highest purity and one of the most transparent glasses made. Its transmission and homogeneity exceed those of crystalline quartz without the problems of orientation and temperature instability inherent in the crystalline form. Fused silica, with a softening temperature of around 1,600 degrees Celsius, a very low coefficient of thermal expansion and resistance to thermal shock and effects of radiation, is the material of choice for various applications.

In addition to fused silica, Dynasil fabricates optical blanks and other components from a variety of other manufacturers' optical materials.



  • OPTICAL COMPONENTS: Lenses, Prisms, Reflectors, Mirrors, Filters, Optical Flats
  • ANALYTICAL INSTRUMENTS: UV Spectrophotometer Cells, Fire Control Devices, Reticle Substrates, Interferometer Plates
  • SEMICONDUCTOR/ELECTRONIC: Microcircuit Substrates, Microwave Devices, Photomasks, Sputter Plates, Excimer Lasers
  • LASERS: Beam Splitters, Brewster Windows, Medical/Industrial Systems, Q-Switches, UV Excimers
  • ENERGY: Laser Fusion Research, Isotope Separation, Solar Cell Covers
  • SPACECRAFT/AIRCRAFT: Docking Light Covers, Windows, Re-entry Heat Shields, Ring Laser Gyros

  • The semiconductor industry, in its quest for smaller and faster chips, has now reached wavelengths of light where fused silica performs best.

  • The medical laser industry is requiring a cooler light to operate with less collateral damage to the surrounding cells. Fused silica makes this possible.

  • Fused silica is becoming the material of choice at the sub-micron level in today's chip manufacturing process known as stepping.

  • Ultraviolet technology, which fused silica has helped make possible, is poised to replace the less effective infrared technology in many applications as diverse as fire detection to telescopes.