Yosef Ben-Aderet

Bio: Yosef Ben-Aderet is an academic researcher from Ariel University. The author has contributed to research in topics: Scattering & Refractive index. The author has an hindex of 1, co-authored 1 publications receiving 15 citations.

Methods and devices for analyzing material properties and detecting objects in scattering media

Abstract: Disclosed is a method for determining an phase spectrum θ(ω) of the complex spectral transfer function H(ω) of a medium. In some embodiments, the method is applied for detecting or imaging an object screened by scattering medium or for determining a refractive index spectrum of a material.

Device for processing a signal delivered by a radiation detector

Abstract: The invention relates to a device for processing a signal delivered by a radiation detector (1), the device comprising a circuit (2, 3) able to deliver a voltage pulse whose amplitude is proportional to a charge detected by the detector (1) and an analog/digital converter (ADC) which digitizes the voltage pulse and delivers digital signals, characterized in that it comprises, downstream of the analog/digital converter (ADC), a processing circuit (5) which comprises: - a unit for reading the digital signals (S(t)) delivered by the analog/digital converter (ADC), - a calculation unit which calculates a temporal variation of the digital signals read, and - a circuit able to capture the digital signals read whose temporal variation reaches a predetermined threshold.

System for performing dual path, two-dimensional optical coherence tomography (oct)

Abstract: Apparatus and methods are described for optically analyzing an object having a plurality of layers, without needing to use a reference mirror. An extended broadband light source produces light, and directs the light toward the object, such as to create respective images of the light source on the respective layers of the object. An imaging system gathers light that is reflected from a point of the object into a conjugate point in the detector. The detector determines the thicknesses of the plurality of layers at the point of the object by analyzing, within the gathered light, interference between light reflected from the plurality of layers of the object at the point. Other applications are also described.

Non-interferometric photoacoustic remote sensing (NI-PARS)

Abstract: A photoacoustic remote sensing system (NI-PARS) for imaging a subsurface structure in a sample, has an excitation beam configured to generate ultrasonic signals in the sample at an excitation location; an interrogation beam incident on the sample at the excitation location, a portion of the interrogation beam returning from the sample that is indicative of the generated ultrasonic signals; an optical system that focuses at least one of the excitation beam and the interrogation beam with a focal point that is below the surface of the sample; and a detector that detects the returning portion of the interrogation beam.

Luminescence based spectrometers

Abstract: Various embodiments of systems, components, modules, routines, and processes for luminescence based spectral measurement are described herein. In one embodiment, a method for measuring a scintillation property of a sample includes directing an ionizing radiation toward the sample, thereby inducing the sample to produce an emission. The method also includes acquiring a spectral luminescence of the produced emission by the sample, the spectral luminescence including a plurality of luminescence intensities at corresponding emission wavelengths or frequencies. The scintillation property of the sample may then be determined based on the acquired spectral luminescence.

Raman spectroscopy systems and raman spectroscopy methods

Abstract: According to various embodiments, a Raman spectroscopy method is provided for reduction of background fluorescence signal. The method may utilize a high speed optical chopper configured to periodically interrupt the laser light beam between the laser light source and the sample; and using the high speed optical chopper to provide a synchronized time-gated optical window for receiving mostly Raman signal while rejecting most or some of the fluorescence signal transmitted from the sample in response to the laser light beam before reaching the sensor