6 results about "Pulsed laser device" patented technology

A pulsed laser device including: a III-V-on-silicon type hybrid pulsed laser source, including a gain section and a saturable absorber section which rest on a photonic substrate, and a longitudinal waveguide located in the photonic substrate; a control optical device including an optical pulse emitter source and a lateral waveguide located in the photonic substrate; the waveguides being sized so that the confinement factor Γlae / SA, Γlai / G in the quantum wells of the corresponding section of the optical mode of the lateral waveguide is higher than the confinement factor IL / ms, in the quantum wells of the semiconductor medium, of the optical mode of the longitudinal waveguide.

The application provides a laser etching device and method, relates to the technical field of laser processing, and the device comprises a pulse laser device and a base for carrying a battery. The pulse laser device is used for emitting a plurality of laser sub-beams towards the battery. The surface of the battery has at least one electrode line preset area. After the plurality of laser sub-beams are emitted, a plurality of focused light spots are formed in the same electrode line preset area. The plurality of focused light spots are spaced apart from each other. The pulse laser device is used for controlling the plurality of focused light spots to scan the battery along the same electrode line preset area. The arrangement direction of at least two focused light spots in the plurality of focused light spots is arranged at an acute angle with the scanning direction of the plurality of focused light spots. When the plurality of focused light spots satisfying the above conditions are used to perform laser etching on the same electrode line preset area, the spacing between adjacent etching holes is increased, the etching width is optimized, the seed crystal area is increased, the series resistance is reduced, the fill factor is improved, and the photoelectric conversion efficiency is improved.

This invention discloses a grounding system for suppressing transient electromagnetic interference from laser target firing, belonging to the field of electromagnetic compatibility grounding technology. It aims to solve the problem of efficient discharge of broadband, high-intensity electromagnetic pulses generated by high-pulse laser target firing. The system includes an inner equipotential ring, an outer annular grounding surface, symmetrical connection components, and an external grounding network. The inner equipotential ring is located inside the target cavity and is electrically connected to the cavity wall through multiple overlapping points to equalize the transient potential within the cavity. The outer annular grounding surface surrounds the target cavity and is electrically connected to the inner equipotential ring through at least four symmetrically distributed conductive connectors. The outer annular grounding surface is connected to multiple points of vertically arranged grounding electrodes in a ring array via multiple connecting flat steel bars to achieve electromagnetic pulse current discharge. This invention can effectively suppress ground potential rise and secondary electromagnetic interference, improving the operational stability and measurement accuracy of high-pulse laser devices.

A pulse laser power source includes a step-up transformer in which a pulse current flows to a primary side, a first magnetic pulse compression circuit transferring charge of the first transfer capacitor to a second transfer capacitor, a second magnetic pulse compression circuit transferring charge of the second transfer capacitor to a peaking capacitor, a reset circuit including reset windings performing magnetic reset, and a series circuit of a resistor and an inductor connected in parallel to the peaking capacitor. A resistance value of the resistor is in a range of 100 to 1000Ω inclusive. An inductance L of the inductor satisfies ((ωL)2+R2)1 / 2>1 / ωCp and L≤(1 / Rep−Tm)×R / 2, where a capacitance of the peaking capacitor is Cp, a resonance angular frequency during transfer of charge from the second transfer capacitor to the peaking capacitor is ω, a repetition frequency is Rep, and a required time for the magnetic reset is Tm.

The present disclosure provides a power supply for a pulsed laser, a pulsed laser device, and a method for manufacturing an electronic device. The power supply for a pulsed laser has a step-up transformer, a first magnetic pulse compression circuit that transfers charge of a first transfer capacitor connected to a secondary side of the step-up transformer to a second transfer capacitor, a second magnetic pulse compression circuit that transfers charge of the second transfer capacitor to a peaking capacitor, a reset circuit, and a series circuit of a resistor and an inductor connected in parallel to the peaking capacitor, a resistance value R of the resistor being 100 Ω or more and 1000 Ω or less, an inductance L of the inductor satisfying the following two equations when a capacitance of the peaking capacitor is Cp, a resonance angular frequency when transferring charge from the second transfer capacitor to the peaking capacitor is ω, a repetition frequency is Rep, and a required time for magnetic reset is Tm.

The pulse energy of pulsed laser light is stabilized. [Solution] The power supply for the pulse laser comprises a step-up transformer, a first magnetic pulse compression circuit that transfers the charge of a first transfer capacitor connected to the secondary side of the step-up transformer to a second transfer capacitor, a second magnetic pulse compression circuit that transfers the charge of the second transfer capacitor to a peaking capacitor, a reset circuit, and a series circuit of a resistor and an inductor connected in parallel to the peaking capacitor. The resistance value R of the resistor is 100Ω or more and 1000Ω or less. When the capacitance of the peaking capacitor is Cp, the resonant angular frequency when the charge is transferred from the second transfer capacitor to the peaking capacitor is ω, the repetition frequency is Rep, and the time required for magnetic reset is Tm, the inductance L of the inductor satisfies the following two equations. ((ωL) 2 +R 2 ) 1 / 2 >1 / ωCp, L ≤ (1 / Rep - Tm) × R / 2