Abstract:
It is the objective of the present invention to provide a Terahertz laser system. This objective is achieved according to the invention by a Terahertz laser apparatus, for example for use in skin cancer treatments, comprising: • a) a pump laser for generating a collimated near/mid-infrared pump laser pulse; • b) an organic crystal which receives the collimated near/mid-infrared pump laser pulse thereby generating Terahertz radiation by optical rectification in the nonlinear organic crystal; and • c) a low-pass filter for separating collimated near/mid-infrared pump laser pulse from the generated Terahertz radiation.
Abstract:
The invention relates to a system for upconversion of photons, comprising a solid sensitizer medium comprising a sensitizer, said sensitizer medium being disposed in an emitter medium comprising an emitter which is capable of absorbing energy from an excited state of the sensitizer.
Abstract:
The invention concerns Phenolic Configurationally Locked Polyene Single Crystals, which are especially suited as highly efficient nonlinear optical organic material. The invention also concerns methods for growth of crystalline thin films or bulk crystals from melt and/or solution. The compounds are suited and the methods may be used for manufacturing optical elements for several bulk and integrated applications, e.g. electro-Optics and THz-Wave applications.
Abstract:
According to an embodiment, a nonlinear optical chromophore includes the structure D-p-A, wherein D is a donor, p is a p-bridge, and A is an acceptor, and wherein at least one of D, p, or A is covalently attached to a substituent group including a substituent center that is directly bonded to at least three aryl groups.
Abstract:
An optical device comprising a photorefractive composition configured to be photorefractive upon irradiation by a blue laser. The photorefractive composition comprises a polymer comprising a repeating unit including at least a moiety selected from the group consisting of the formulas (Ia), (Ib) and (Ic), as defined herein.
Abstract:
A photosensitized composite material and a material, an element, a device, and the like, which employ the photosensitized composite material, are provided. In the photosensitized composite material, multiphoton absorption compounds are highly sensitized for practical use by utilizing an enhanced plasmon field. The photosensitized composite material has a structure where the multiphoton absorption compounds are linked to the surface of a fine metal particle through linking groups. The fine metal particle generates an enhanced surface plasmon field in resonance with a multiphoton excitation wavelength. The multiphoton absorption compounds have a molecular structure enabling multiphoton absorption. The photosensitized composite material is contained in or used for, for example, a three-dimensional memory material and a three-dimensional recording medium, an optical power limiting material and an optical power limiting element, a photocuring material and a stereolithography system, and a fluorescent material for a multiphoton fluorescence microscope and a multiphoton fluorescence microscope.