Kinnaird uses lead and optical crystal.

Banks has created various electrochemical, optical, quartz crystal microbalance-based sensors to measure chemical treatment levels, corrosion, scale and microbial fouling.

BBO is a popular nonlinear optical crystal.

They have also learned how to extract information from a "Frozen Voice of God" - an optical data-storage crystal left over from the original settlers.

He pointed at the rows of plates carrying electronic chips and optical crystals.

The property of birefringence (or double refraction) is observed in many optical crystals.

The OPO consists essentially of an optical resonator and a nonlinear optical crystal.

In the nonlinear optical crystal, the pump, signal and idler waves overlap.

In order to change the output wave frequencies, one can change the pump frequency or the phasematching properties of the nonlinear optical crystal.

Depending on the substance which is fractured, a fracture reduces strength (most substances) or inhibits transmission of light (optical crystals).