A laser crystallization device includes: a first solid-state laser generator which generates a first solid-state laser having a first energy intensity; a second solid-state laser generator which generates a second solid-state laser having a second energy intensity lower than the first energy intensity; and a third solid-state laser generator which generates a third solid-state laser having a third energy intensity lower than the first energy intensity.

Provided is a mask manufacturing method including preparing a preliminary mask sheet including a first surface and a second surface facing each other, forming a mask support part including a concave part recessed from the first surface and a protrusion part adjacent to the concave part and protruding from the first surface by irradiating a first laser light to the first surface of the preliminary mask sheet, and forming an opening part adjacent to the protrusion part and penetrating the preliminary mask sheet by irradiating a second laser light on the second surface of the preliminary mask sheet.

A method for laser cutting a workpiece having a thickness of less than 6 mm includes the steps of directing a first laser beam, a second laser beam, and a gas jet at an entrance surface of the workpiece such that the first and second laser beams at least partially overlap one another on the workpiece. The first laser beam has a smaller focus diameter than the second laser beam, a beam parameter product of the first laser beam is at most 5 mm*mrad, and a power proportion of the second laser beam of a total laser power is less than 20%. A cutting kerf with a broken cutting edge is formed on the entrance surface of the workpiece.

Laser device (100) includes first and second laser oscillators (1), (2) that respectively emit first and second laser lights (LB1), (LB2) having first and second wavelengths, and first and second optical systems (10), (20). First optical system (10) is configured to couple first and second laser lights (LB1), (LB2) to transmit the first and second laser lights to second optical system (20), and second optical system (20) is configured to condense first laser light (LB1) at first condensing position (FP1) and second laser light (LB2) at second condensing position (FP2). A maximum angle formed by an optical axis and an outermost component of first laser light (LB1) emitted from first optical system (10) is different from a maximum angle formed by an optical axis and an outermost component of the second laser light (LB2).

An optical device may include a polarization splitter to split a unidirectional rotary optical beam into a first rotary optical beam having a first polarization state and a second rotary optical beam having a second polarization state. The unidirectional rotary optical beam and the second rotary optical beam may have optical power with a first direction of spatial rotation. The optical device may include a reflective element to reverse a parity of the first rotary optical beam in association with causing optical power of the first rotary optical beam to have a second direction of spatial rotation. The optical device may include a polarization combiner to, after reversal of the parity of the first rotary optical beam, combine the first rotary optical beam and the second rotary optical beam to create a bi-directional rotary optical beam having the first polarization state and the second polarization state.

Various embodiments of an apparatus, methods, systems and computer program products described herein are directed to an agricultural observation and treatment system and method of operation. The agricultural treatment system uses a treatment unit for emitting a laser at agricultural objects. The treatment unit is configured with a treatment head assembly that includes a moveable treatment head with one or more laser emitting tips. A first and second motor assembly are operated by the treatment unit to control the movement of the treatment head. The first motor assembly includes a first motor rotatable in a first rotational axis. A first linkage assembly is connected to the first motor and the treatment head assembly. The first linkage assembly is rotatable by the first motor. The second linkage assembly is rotatable by the second motor.

The present application relates to an apparatus (10) for laser processing, comprising at least two laser sources, which are different from one another and are configured for supplying respective laser beams having wavelengths different from one another, a laser head (20), which can be operated as end tool of a laser machine tool (90) that can be configured for carrying out at least one type of laser processing operation that can be selected from a set of types of laser processing operations, and a set of orientable optical components (16) so as to provide a set of selectable optical paths for directing a laser beam supplied by a laser source of said at least two laser sources, and a control unit (30) coupled to the at least two laser sources, to the set of orientable optical components (16), and to the laser head (20) and configured for controlling the at least two laser sources, the set of orientable optical components (16), and the laser head (20) according to the type of laser processing operation selected from the set of types of laser processing operations, i.e., so as to supply and direct a laser beam associated to the respective type of processing operation onto a region of a work surface (110). The laser head (20) comprises a set of nozzles (40, 42, 44, 46) configured for directing at least one processing material onto the working region (110), which comprises at least one nozzle (40) configured for directing jets of powder of at least one material, preferably powder of metal material (in brief metal powder), as well as comprising at least one of the following: a) a first nozzle (42) configured for directing a metal wire onto the working region, preferably metal wire for laser welding; and b) a second nozzle (46) configured for directing an assist gas onto the working region, preferably an assist gas for laser welding, and wherein the control unit (30) is coupled to the set of nozzles and is configured for controlling at least one nozzle of said set of nozzles (40, 42, 44, 46) according to the type of associated and selected laser processing operation so as to control said at least one nozzle so that it will direct respective processing materials onto the working region (110) simultaneously with direction of the laser beam (L) associated to the type of laser processing operation selected.

A laser processing apparatus emits processing light, measurement light, processing guide light, and measurement guide light with which a surface of a workpiece is irradiated. Respective wavelengths of the processing guide light and the measurement guide light are set to wavelengths at which a deviation amount between an irradiation position of the processing guide light and an irradiation position of the measurement guide light due to a chromatic aberration of magnification of a lens, and a deviation amount between an irradiation position of the processing light and an irradiation position of the measurement light due to the chromatic aberration of magnification of the lens are equal to each other. Therefore, positioning of spot positions of a plurality of laser lights having different output differences can be realized with high accuracy and high speed.

The present disclosure provides a printer system based on high power, high brightness visible laser source for improved resolution and printing speeds. Visible laser devices based on high power visible laser diodes can be scaled using the stimulated Raman scattering process to create a high power, high brightness visible laser source.

A welding or cladding apparatus in which one or more energy beam emitters are used to generate a wide beam spot transverse to a welding or cladding path, and one or more wide feeders feed wire to the spot to create a wide welding or cladding puddle.