Abstract:
An electronic detection system includes an electronic device, a detector and a memory. The electronic device includes a circuit substrate, a plurality of photoelectric components, and a plurality of tunable current source circuits. Each photoelectric component has one or more peak emission wavelengths in response to a plurality of current values. The tunable current source circuits are disposed on the circuit substrate and electrically connected to the photoelectric components. The detector captures a feature value of a corresponding one of the photoelectric components. One or more lookup tables stored in the memory are based on the feature values and the current values of the photoelectric components. Each tunable current source circuit transmits an input current to a corresponding one of the photoelectric components in response to the lookup table(s) to perform a selected peak emission wavelength.
Abstract:
An optical switch using a Michelson interferometer and differential onset of optical nonlinearity. Modulation of optical signals can occur at speeds that exceed that of electronic devices.
Abstract:
Embodiments are disclosed relating to a refractively-scanning interferometer comprising an aperture that receives an incident light beam at a receiving angle, a beam splitter configured to split the incident light beam into a first beam and a second beam, a first and a second reflector arranged to reflect the first beam and second beam, respectively, towards a combining optical element, and a refractive Optical Path Difference (rOPD) assembly interposed between the beam splitter and the first reflector, wherein the rOPD Assembly refracts the first light beam an even number of times with induced phase discrepancy being a vector sum of a first phase discrepancy induced by a first refraction and a second phase discrepancy induced by a second refraction, the rOPD Assembly being configured such that the first phase discrepancy is substantially opposite in direction to the second phase discrepancy, a portion of the first and second phase discrepancies cancelling one another out to decrease magnitude of the phase discrepancy.
Abstract:
The present document discloses a method for measuring the carrier-envelope phase, CEP, offset of ultrashort light pulses, the method comprising: generating an optical interference signal encoding the CEP offset of a light pulse to be measured; applying at least two spectral filters in parallel to the generated interference signal, wherein the transmission functions of the spectral filters are periodic and the at least two spectral filters have partial or fully orthogonal components among themselves; detecting each signal filtered by each of the at least two spectral filters to obtain a magnitude for each of the filtered signals; converting the two obtained magnitudes to a polar representation having a radius and an angle; outputting the CEP offset from the angle of the converted polar representation. It is also disclosed a corresponding system, a field-resolved spectrometer including the system and the use of the system in spectroscopy or in field-resolved spectroscopy.
Abstract:
An optical switch using a Michelson interferometer and differential onset of optical nonlinearity. Modulation of optical signals can occur at speeds that exceed that of electronic devices.
Abstract:
La demande concerne un appareil de mesure de l'indice de réfraction d'un fluide par interféromètrie en lumière blanche, à deux ondes. Chacune des ondes traverse une enceinte (33). Le chemins optiques correspondants (38, 39) ont des longueurs différentes. La source (3) et le récepteur (15, 16, 17) sont chacun reliés à l'interféromètre (37, 41) par une fibre optique (8). Cette disposition permet la mise en oeuvre d'enceinte de grande épaisseur par rapport à la différence de longueurs des chemins.