The control of luminous radiation has extremely important implications for modern and future
technologies as well as in medicine. In this Review, we detail chemical structures and their …

We review nonlinear optical processes in various materials which can be utilized in passive
optical limiting devices. Specifically, the mechanisms of reverse saturable absorption, two …

We extend the application of the Z-scan experimental technique to determine free-carrier
nonlinearities in the presence of bound electronic refraction and two-photon absorption. We …

Two-photon absorption coefficients/32 of ten direct gap semiconductors with band-gap
energy Eg varying between 1. 4 and 3.7 eV were measured using 1.06 µm and 0.53 um …

The optical-limiting behavior and two-photon absorption properties of four novel organic
compound solutions in tetrahydrofuran have been investigated. An ultrashort laser source …

We performed a series of experiments on suspensions of carbon particles in liquids (ink)
and carbon particles deposited on glass to determine the mechanisms for the observed …

In the CRC Handbook of Laser Science and Technology: Supplement 2, experts summarize
the discovery and properties of new optical materials that have appeared since the …

Nonlinear optics has been a rapidly growing field in recent decades. It is based on the study
of effects and phenomena related to the interaction of intense coherent light radiation with …

Optical second-harmonic studies show that the electronic structure in the top 75–130 Å of a
crystalline Si surface loses cubic order only 150 fsec after the Si is excited by an intense 100 …

We present a detailed characterization of the output of passive semiconductor-based optical
limiters. These devices utilize two-photon absorption along with photogenerated carrier …