Abstract:
The invention relates to an optical probe, comprising: a first cell (C1) which includes a first transmission module (LED1) and a first detection module (D1) capable of producing a first detection signal; a second cell (C2) which includes a second detection module (D2) capable of generating a first signal for monitoring the first transmission module (LED1); a control circuit for generating a first signal for the weighted measurement of the first detection signal using the first monitoring signal. Furthermore, the second cell (C2) includes a second transmission module (LED2); the second detection module (D2) is capable of generating a second detection signal; and the first detection module (D1) is capable of generating a second signal for monitoring the second transmission module (LED2).
Abstract:
The invention relates to a calibrating device on a silicon substrate SU formed in addition to reference level Nc by at least two distinct levels Ng and Nd which have two distinct dopings. Said invention also relates to a method for producing the inventive calibrating device consisting in defining at least two distinct sections Sg and Sd of the reference section Sc on a silicon substrate SU and in doping with different degrees the different sections of the reference section.
Abstract:
Two-wave interferometric device, making it possible to obtain an interference pattern of a light source (S), whose light passes through the device, comprising: - a dephasing layer (A) made of a first material (1), of optical index n A , comprising a first face (A1) and a second face (A2) opposite one another, said first face (A1) comprising at least one element or surface not parallel to said second face (A2); - a support layer (B) made of a second material (2), of optical index n B differing from the optical index n A , comprising a first face (B1) opposite and parallel to a second face (B2); - the second face (A2) of the dephasing layer (A) and the second face (B2) of the support layer (B) being joined, in such a way as to form a monolithic interferometric plate (LM).
Abstract:
The invention relates to a system for homogenising a laser pulse emitted by a laser source in order to illuminate a target homogeneously. According to the invention, the following elements are disposed between the laser source and the target, namely: a phase plate formed by a plurality of subpupils capable of generating a plurality of delayed laser beams in the direction of the target, the path difference Δd between two adjacent delayed laser beams being greater than the temporal coherence Tc of the laser pulse; and focusing means for superimposing said delayed laser beams on the target in a homogeneous spot.
Abstract:
The invention concerns an optical mode adapter comprising first (C1) and second (C2) channels on an optical substrate (31) designed for connection of first and second waveguides respectively to its first (11) and to its second (12) ends. Said two channels being covered with at least a guide layer (33), the refractive index of the first channel (C1) is lower than that of the second channel (C2). The invention also concerns a method for making said adapter.