Instantaneous three-dimensional imaging using supercontinuum and ultrafast optical Kerr gate of tellurite glass

An instantaneous three-dimensional imaging technique using a chirped supercontinuum and an ultrafast optical Kerr gate, in which a sapphire plate and a TeO₂-ZnO-Na₂O oxide glass were used to generate the chirped supercontinuum and the ultrafast optical Kerr gate, respectively, is demonstrated. This technique is applicable to ultrafast shape measurement, such as shape imaging of moving objects, or imaging of laserinduced refractive index changes in transparent media.