Abstract:
A photorefractive (PR) polymer composite (310) is provided that includes a charge transporting polymer (CTP) matrix (311) and a photosensitizer (312) comprising a quantum dot (QD) material (314) with a first band gap (315) coupled to a nanoparticle material (317) with a second band gap (316) greater than the first band gap. The photosensitizer (312) is configured to generate a plurality of free charges (318) and to transfer the free charges to the CTP matrix (311) in response to an incident photon (320) on the PR polymer composite (310). An apparatus (500) is also provided, for writing holograms of 3D perspective views of an object from different directions within the PR polymer composite (310). A method (600) is also provided for forming the PR polymer composite.
Abstract:
Briefly stated, technologies are generally described for displaying a holographic image on a mobile device with a reference beam provided from a light source station. Example devices/systems described herein may use one or more of a mobile device and/or one or more light source stations. In various examples, the mobile device may include a holographic image display unit configured to receive a reference beam and display the holographic image responsive to the reference beam. The light source station may be configured to track a location of the holographic image display unit and provide a reference beam towards the holographic image display unit. The light source station may be further configured to exchange a control signal with the mobile device such that the holographic image display unit is operable to display the holographic image based on the control signal.
Abstract:
Die Erfindung betrifft einen Master (20) für die Herstellung eines in einem individualisierbaren Bereich individualisierten Volumenreflexionshologramm umfassend einen Träger (20), mindestens eine Beugungsstruktur (21), welche auf dem Träger (20) angeordnet ist oder in diesem ausgebildet ist und einen individualisierbaren Bereich bedeckt, wobei die mindestens eine Beugungsstruktur (21) kohärentes Licht einer Wellenlänge, das aus einer vorgegebenen Einfallsrichtung auf die Beugungsstruktur (21) auftrifft in eine vorgegebene Ausfallrichtung zurückstrahlt, wobei der Master (52) ein Reflexionselement (55) umfasst, das gerichtetes Licht gemäß der geometrischen Optik spiegelnd reflektiert. Ferner betrifft die Erfindung ein Verfahren zur Herstellung von individualisierten Volumenhologrammen sowie ein Verfahren zur Herstellung eines Masters (52).
Abstract:
A method is presented utilizing a holographic approach for linear phase conjugation to compensate for atmosphere-induce aberrations that severely limit laser performance. In an effort to improve beam quality, fine aim point control, and laser energy delivered to the target, aberration compensation is accomplished using holographic adaptive tracking that utilizes a spatial light modulator as a dynamic wavefront-reversing element to undo aberrations induced by the atmosphere, platform motion, or both. This aberration compensation technique results in a high fidelity, near-diffraction limited laser beam delivered to the target.