Abstract: Systems and methods for computing a causal uplift in performance of an output action for one or more treatment actions in parallel are described herein. In an embodiment, a server computer receives interaction data for a particular period of time which identifies a plurality of users and a plurality of actions that were performed by each user of the plurality of users through a particular graphical user interface during the particular period of time. The server computer uses the interaction data to generate a feature matrix of actions for each user, and a set of confounding variables included to minimize spurious correlations. The feature matrix is then used to train a machine learning system, using data identifying a user's performance or non-performance of each action as inputs and data identifying performance or non-performance of a target output action as the output.

Abstract: Disclosed is a system for compressing short or ultra-short light pulses emitted by a light source. The compression system includes: —a first non-linear light pulse compression module including a multi-pass cell, the multi-pass cell including a first non-linear optical medium; and —a second non-linear light pulse compression module including a capillary filled with a gaseous second non-linear optical medium, and a compressor arranged at the output of the capillary, the first non-linear compression module and the second non-linear compression module being arranged in series on the path of a source light beam of source light pulses. Also disclosed is a light-pulses laser system and to a method for compressing short or ultra-short light pulses.

Abstract: An optical component mount includes a fixed portion and a movable portion, the mount being configured to support at least one optical component, the fixed portion and the movable portion being mechanically connected to each other by a flexible articulation which is capable of allowing the movable portion to move relative to the fixed portion. The mount includes a cooling circuit which is integrated into the fixed portion, the movable portion and the articulation and which is capable of allowing a fluid to flow inside the mount, the cooling circuit including a fluid inlet hole and a fluid outlet hole, the fluid inlet hole and the fluid outlet hole being arranged on the fixed portion.

Abstract: A system and methods for a universal integration framework for data analytics pipelines are disclosed. According to one embodiment, a computer-implemented method maintains internal consumer data that has a consumer ID associated with a consumer based on events at a partner platform. The platform server determines target characteristics based on instructions provided by a client or the internal consumer data and generates a target consumer group associated with an internal project ID based on the target characteristics, wherein the target consumer group includes the consumer ID and internal consumer data associated with each consumer. The platform server transmits the target consumer group to the partner platform and receives partner event data indicative of updates to consumer data. The platform server generates an updated target consumer group based on the updated consumer data and transmits updates to the partner platform to improve consumer interest.

Abstract: Systems and methods for computing a causal uplift in performance of an output action for one or more treatment actions in parallel are described herein. In an embodiment, a server computer receives interaction data for a particular period of time which identifies a plurality of users and a plurality of actions that were performed by each user of the plurality of users through a particular graphical user interface during the particular period of time. The server computer uses the interaction data to generate a feature matrix of actions for each user, and a set of confounding variables included to minimize spurious correlations. The feature matrix is then used to train a machine learning system, using data identifying a user's performance or non-performance of each action as inputs and data identifying performance or non-performance of a target output action as the output.

Abstract: Disclosed is a system and a method for generating high-power laser pulses with very high repetition rate. The laser system includes an oscillator capable of generating a source laser beam including a series of sources pulses with femtosecond or picosecond duration at a first repetition frequency no lower than 800 megahertz and an optical amplifier system suitable for receiving and amplifying the series of source pulses at a second repetition frequency that is equal to or a multiple of the first repetition frequency, the multiple being a non-negative integer greater than or equal to two, so as to generate a series of laser pulses with very high repetition frequency.

Abstract: Disclosed is a method for cutting dielectric or semiconducting material with a laser. The method includes the following steps: emission of a laser beam including at least one burst of N femtoseconds laser pulses; spatial separation of the laser beam into a first split beam having a first energy, and respectively, a second split beam having a second energy; spatial concentration of energy of the first split beam in a first zone of the material, respectively, of the second split beam in a second zone of the material, the first zone and the second zone being separate and staggered by a distance dx; and adjustment of the distance between the first zone and the second zone in such a way as to initiate a straight micro-fracture oriented between the first zone and the second zone.

Abstract: Systems and methods for data ingestion in real time are described herein. In an embodiment, a server computer receives a message comprising one or more client events from a storage device which publishes the message in response to storing the one or more client events. The server computer stores the one or more client events as raw event strings which are then parsed into parsed event strings. Identity resolution methods are performed on the parsed event strings. Feature groups are then identified in the parsed event strings and used to generate aggregation keys which are used to aggregate the feature groups prior to storing aggregated data in one or more aggregation tables.

Abstract: Disclosed is a system for generating a spatially localized, high-intensity laser beam, including: a laser source designed to generate a burst of N laser pulses with a duration of less than or equal to one picosecond, the N laser pulses having a first repetition frequency greater than or equal to 0.5 gigahertz; a resonant optical cavity designed to receive and store the burst of N laser pulses, the resonant optical cavity being designed to focus the burst of N laser pulses in an interaction region of the resonant optical cavity; and a servo control system designed to control the first repetition frequency relative to the roundtrip distance in the resonant optical cavity, such that the N pulses of the burst are superimposed temporally and spatially by constructive interferences in the interaction region so as to form one giant ultra-short and high-energy pulse.

Abstract: Disclosed is a laser system including a source, for generating a source signal, and an optical amplifier system. The laser system includes a pulse selection or variation device configured to select or vary the source signal so as to form a main signal composed of one or more light pulses. The main signal is temporally variable in terms of rhythm and/or amplitude. The laser system is configured to inject the main signal and a secondary signal into the optical amplifier system. The secondary signal is varied on the basis of the temporal variation in terms of rhythm and/or amplitude of the main signal so as to stabilize the power stored in the optical amplifier system in a time-dependent manner, and the laser system is configured to spatially separate the amplified main signal from the amplified secondary signal.

Abstract: A surgical instrument (1) for knee balancing, comprising: a static tibial element (2) including a base and a tibial paddle (21); a femoral element (3) including a femoral paddle (31) and a femoral arm; a movable element (4) including a guide (40) movable in translation on the base according to a longitudinal axis (AL), wherein the femoral element is pivotally mounted on said movable element according to an anterior-posterior axis (AP), and a transverse arm; a system (5) for setting the mobility of said guide in order to provide a distraction function; a reversible blocking system coupled between the transverse arm and the femoral arm to pivotally immobilize the femoral element with respect to the movable element in a reversible manner in order to set the pivot angle of the femoral paddle with respect to the tibial paddle at different angle values.

Abstract: Disclosed is a nonlinear optical system for generating or amplifying light pulses by N-wave mixing, including a nonlinear optical medium suitable for receiving at least one first light pulse and one second light pulse. The system includes a fast modulation device for modulating a time delay between the second light pulse and the first pulse light in the nonlinear optical medium, the time delay modulation device being placed upstream of the nonlinear optical medium, and the time delay modulation device being modulated at least between a first delay value and a second delay value, so as to modulate the generation or amplification of a light pulse by N-wave mixing of the at least one first light pulse et one second light pulse in the nonlinear optical medium.

Abstract: A surgical instrument (1) for knee balancing, comprising: a static tibial element (2) including a base and a tibial paddle (21); a femoral element (3) including a femoral paddle (31) and a femoral arm; a movable element (4) including a guide (40) movable in translation on the base according to a longitudinal axis (AL), wherein the femoral element is pivotally mounted on said movable element according to an anterior-posterior axis (AP), and a transverse arm; a system (5) for setting the mobility of said guide in order to provide a distraction function; a reversible blocking system coupled between the transverse arm and the femoral arm to pivotally immobilize the femoral element with respect to the movable element in a reversible manner in order to set the pivot angle of the femoral paddle with respect to the tibial paddle at different angle values.

Abstract: Disclosed is a laser system including a source, for generating a source signal, and an optical amplifier system. The laser system includes a pulse selection or variation device configured to select or vary the source signal so as to form a main signal composed of one or more light pulses. The main signal is temporally variable in terms of rhythm and/or amplitude. The laser system is configured to inject the main signal and a secondary signal into the optical amplifier system. The secondary signal is varied on the basis of the temporal variation in terms of rhythm and/or amplitude of the main signal so as to stabilize the power stored in the optical amplifier system in a time-dependent manner, and the laser system is configured to spatially separate the amplified main signal from the amplified secondary signal.

Abstract: Disclosed is a UV-visible laser system having ultrashort pulses with high power and/or high energy. The laser system includes at least one non-linear optical crystal (1) adapted for receiving two distinct ultrashort laser pulses (31, 32) in the visible or infrared domain emitted respectively by two distinct laser pulse sources (11, 12) and a temporal synchronization unit (41, 42) adapted so that the two ultrashort laser pulses (31, 32) are superimposed in time and space in the non-linear optical crystal (1) with any phase shift, and generate, by sum frequency, an ultrashort laser pulse (131) having an optical frequency equal to the sum of the respective optical frequencies of the two distinct laser pulses (31, 32).

Abstract: A system and method for generating a burst of ultra-short, high-power laser pulses, the system includes elements for generating laser pulses having a repetition period ?1, amplification elements including an optical amplifier medium, a regenerative optical cavity, elements for injecting the laser pulses into the regenerative optical cavity, and elements for extracting the laser pulses from the regenerative optical cavity. The regenerative optical cavity has a total length such that the duration of a round trip of each pulse is between N?1 and N times the period ?1, wherein N is an integer higher than or equal to 2, the injection elements are adapted for trapping a burst of N laser pulses in the regenerative optical cavity, the extraction elements are suitable to extract the burst of N laser pulses from the regenerative optical cavity, and the optical amplifier medium is suitable for forming a burst of amplified laser pulses.

Abstract: A system for the optical amplification of high-energy ultrashort light pulses, includes: an oscillator that can emit light pulses of sub-picosecond duration ?0, a pre-compensator, and a solid optical amplifier that can amplify the chirped light pulses. The pre-compensator has a negative group velocity dispersion, the pre-compensator being capable of generating negatively chirped light pulses, and the optical amplifier has a positive group velocity dispersion, the optical amplifier being disposed such as to receive and amplify the negatively chirped light pulses. The optical amplifier is configured such that the light pulses can induce a broadening of the spectral gain band ?? by self-phase modulation, such as to generate amplified, time-compressed light pulses of duration ?3, which is shorter than the duration ?=1/?? of the bandwidth limitation of the optical amplifier.

Abstract: A method and passive device for the coherent combination of two amplified and/or spectrally broadened optical beams using at least one bidirectional optical component (A1, A2), the device includes an amplitude division ring interferometer having optical splitting and recombining elements disposed so as to receive an incident optical beam (S0) and to split it spatially into a first secondary input beam (H1) and a second secondary input beam (H2), optical guiding elements disposed so as to define an optical path in the form of a ring in the interferometer, the at least one bidirectional optical component being disposed on the optical path of the ring interferometer, the splitting and recombining elements being disposed in such a way as to receive and to recombine spatially, temporally and coherently the first secondary output beam (H1?) and the second secondary output beam (H2?), so as to form a coherent output beam.

Abstract: A method and passive device for the coherent combination of two amplified and/or spectrally broadened optical beams using at least one bidirectional optical component (A1, A2), the device includes an amplitude division ring interferometer having optical splitting and recombining elements disposed so as to receive an incident optical beam (S0) and to split it spatially into a first secondary input beam (H1) and a second secondary input beam (H2), optical guiding elements disposed so as to define an optical path in the form of a ring in the interferometer, the at least one bidirectional optical component being disposed on the optical path of the ring interferometer, the splitting and recombining elements being disposed in such a way as to receive and to recombine spatially, temporally and coherently the first secondary output beam (H1?) and the second secondary output beam (H2?), so as to form a coherent output beam.

Abstract: The present invention relates to a high-power femtosecond pulsed laser, the laser including: a source able to generate a train of input laser pulses having an envelope frequency and a carrier frequency; a chirped pulse amplification unit; and, a unit for controlling the phase drift between the envelope frequency and the carrier frequency of the output laser pulses. According to the invention, the unit for controlling the phase drift between the envelope frequency and the carrier frequency includes electro-optical phase-modulation unit that are placed on an optical path of the chirped pulse amplification unit in order to stabilize the phase drift between the envelope frequency and the carrier frequency of the output laser pulses as a function of time.