Laser gun of solid-state laser with diode pumping

FIELD: laser engineering.

SUBSTANCE: invention relates to laser equipment. Laser gun has an active element in the form of a rod, optical pumping sources located on holders around the active element, a system of cooling the active element and the optical pumping sources, flanges and an element connecting the flanges. Holders are located in coaxial holes of the flanges. Cooling system comprises a tube encircling the active element to form a radial clearance, an input, an outlet collectors and channels of the holders. Element connecting the flanges represents a frame containing parallel plates connected with ribs. Holders have on both sides limiters interacting with end surfaces of the flanges. One of the limiters of each holder is made with flats interacting with slots of the flange.

EFFECT: technical result is enabling higher cooling efficiency.

1 cl, 6 dwg

 



 

Same patents:

FIELD: physics.

SUBSTANCE: invention relates to laser technology and specifically to liquid coolants of solid-state lasers (e.g., neodymium or holmium lasers) which are simultaneously an optical filter for ultraviolet (UV) radiation of the laser pumping lamp. The coolant can be used anywhere, where solid-state lasers, having a liquid cooling system with filtration of UV radiation of the pumping lamp, are designed or used. The liquid coolant contains 2-oxy-4-(C7-C9-alkyl)oxybenzophenone, butyl alcohol and octane, with the following content of components, wt %: 2-oxy-4-(C7-C9-alkyl)oxybenzophenone 0.3-0.6, butyl alcohol 35-45, octane - the balance.

EFFECT: longer service life of the laser.

FIELD: physics.

SUBSTANCE: diode pumped optical amplifier head has, in a housing, an active element in form of a rod, arrays of diode lasers placed on holders along the active element, and a cooling system having a glass tube encircling the active element to form a radial channel δ. Damping elements are placed at both ends of the glass tube. Cooling channels with inlet and outlet pipes, which form a double-loop cooling system, are placed in the housing, holders and arrays of diode lasers.

EFFECT: high laser radiation output energy and achieving stability of output energy parameters at pulse repetition frequency of up to 100 Hz.

2 cl, 7 dwg

FIELD: physics.

SUBSTANCE: invention relates to an optical pumping structure for a laser which includes: an active medium in the form of a cylindrical rod (1) with a circular cross-section, wherein ends of the rod are inserted into two rings (11) made of a thermally conductive material; at least three stacks (21, 22) of small pumping diode rods arranged in the form of a star around the rod; and a support (5) temperature-regulated by a Peltier-effect module (8). The rings (11) are in contact with the support (5), and a stack of diodes, called the bottom stack (21), is situated between the rod (1) and the support (5), and has for each other stack (22), a thermal conduction block (7) forming a support for said stack (22), these blocks (7) being mounted on the cooled support (5) and not being in contact with one another or with the rings (11).

EFFECT: high cooling efficiency with smaller dimensions of the device.

6 cl, 3 dwg

FIELD: physics.

SUBSTANCE: laser has an amplifier module which has a tube having an inner surface and an outer surface, where the tube contains active material of the laser. The inner surface of the tube is adjacent to a first substrate, where the first substrate includes a first set of microchannels. The outer surface of the tube is adjacent to a second substrate, where the second substrate includes a second set of microchannels. Outside the second substrate there are diode matrices assembled in such a way that, optical pumping radiation can be transmitted to the active material of the laser. When realising the laser generation method, pumping radiation is transmitted from the multiple diode matrices to the laser active material of the said amplifier module and cooling substance is fed through the first and second set of microchannels.

EFFECT: elimination or reduction of effects of formation of a thermal lens, double refraction, double focusing and problems of centering, high beam quality and high level of average power is provided.

15 cl, 14 dwg

The invention relates to laser technology, namely the periodic-pulsed solid-state lasers

The invention relates to solid-state optical quantum generators, in particular for their cooling systems, and can be used in the manufacture of laser equipment

FIELD: physics.

SUBSTANCE: laser has an amplifier module which has a tube having an inner surface and an outer surface, where the tube contains active material of the laser. The inner surface of the tube is adjacent to a first substrate, where the first substrate includes a first set of microchannels. The outer surface of the tube is adjacent to a second substrate, where the second substrate includes a second set of microchannels. Outside the second substrate there are diode matrices assembled in such a way that, optical pumping radiation can be transmitted to the active material of the laser. When realising the laser generation method, pumping radiation is transmitted from the multiple diode matrices to the laser active material of the said amplifier module and cooling substance is fed through the first and second set of microchannels.

EFFECT: elimination or reduction of effects of formation of a thermal lens, double refraction, double focusing and problems of centering, high beam quality and high level of average power is provided.

15 cl, 14 dwg

FIELD: physics.

SUBSTANCE: invention relates to an optical pumping structure for a laser which includes: an active medium in the form of a cylindrical rod (1) with a circular cross-section, wherein ends of the rod are inserted into two rings (11) made of a thermally conductive material; at least three stacks (21, 22) of small pumping diode rods arranged in the form of a star around the rod; and a support (5) temperature-regulated by a Peltier-effect module (8). The rings (11) are in contact with the support (5), and a stack of diodes, called the bottom stack (21), is situated between the rod (1) and the support (5), and has for each other stack (22), a thermal conduction block (7) forming a support for said stack (22), these blocks (7) being mounted on the cooled support (5) and not being in contact with one another or with the rings (11).

EFFECT: high cooling efficiency with smaller dimensions of the device.

6 cl, 3 dwg

FIELD: physics.

SUBSTANCE: diode pumped optical amplifier head has, in a housing, an active element in form of a rod, arrays of diode lasers placed on holders along the active element, and a cooling system having a glass tube encircling the active element to form a radial channel δ. Damping elements are placed at both ends of the glass tube. Cooling channels with inlet and outlet pipes, which form a double-loop cooling system, are placed in the housing, holders and arrays of diode lasers.

EFFECT: high laser radiation output energy and achieving stability of output energy parameters at pulse repetition frequency of up to 100 Hz.

2 cl, 7 dwg

FIELD: physics.

SUBSTANCE: invention relates to laser technology and specifically to liquid coolants of solid-state lasers (e.g., neodymium or holmium lasers) which are simultaneously an optical filter for ultraviolet (UV) radiation of the laser pumping lamp. The coolant can be used anywhere, where solid-state lasers, having a liquid cooling system with filtration of UV radiation of the pumping lamp, are designed or used. The liquid coolant contains 2-oxy-4-(C7-C9-alkyl)oxybenzophenone, butyl alcohol and octane, with the following content of components, wt %: 2-oxy-4-(C7-C9-alkyl)oxybenzophenone 0.3-0.6, butyl alcohol 35-45, octane - the balance.

EFFECT: longer service life of the laser.

FIELD: physics.

SUBSTANCE: optical amplifier head with a diode pumping counter-reflector consists of, arranged in a housing, an active element in the form of a rod, diode pumping elements arranged uniformly around and along the active element on holders, and a cooling system comprising a pipe encircling the active element to form an annular channel with a width δ, channels in the housing, each holder and pumping elements and input and output collectors. Each holder comprises a reflecting surface facing the active element; the ends of the active element are attached in clamps mounted in the housing; the cooling system is in the form of a single loop.As the diode pumping elements lines of laser diodes are used each provided with a cylindrical lens, and the reflecting surfaces of the holders are located along the surface of the active element and encircle the said element diametrically.

EFFECT: reducing the hydraulic resistance of the cooling system.

6 dwg

FIELD: optics.

SUBSTANCE: invention relates to laser engineering. Laser head of solid-state laser with diode pumping thermal stabilisation contains the following components installed in housing in form of polyhedron: an active element, matrix of laser diodes located around and along the active element, and cooling system made up of two independent circuits for cooling active element and matrices, cooling circuit of the active element comprises tube encircling the active element and forming circular channel with width δ, and inlet, outlet manifolds with channels. Laser head is equipped with light guides located parallel to the active element axis, a cooling circuit for matrices has thermal interface, heat sinks and thermal stabilisation elements arranged in heat exchange module and heat exchangers. Thermal stabilisation elements are presented as heaters and cooling elements.

EFFECT: technical result consists in simplification of the cooling system for the active element.

1 cl, 2 dwg

FIELD: laser engineering.

SUBSTANCE: invention relates to laser engineering. Solid-state laser emitter without fluid cooling and thermal stabilisation of diode pumping has an active element installed in rings, thermal interface and diode pumping unit consisting of a heat spreader surface with projections mounted rigidly on mounting surface, thermoelectric module, which is located between heat spreader and mounting surface, and lines of laser diodes, located on ledges heat spreader surface regularly relative to active element and faced to emitting part. Emitter is equipped with rigidly fixed on mounting surface of resonator in housing of bearing part of which there is an active element. Diode pumping unit is equipped with heater arranged in heat spreader, and bounding box, in which there is a thermoelectric module with an air gap along perimeter. Resonator and diode pumping unit have no contacts.

EFFECT: technical result is enabling increase of efficiency of laser.

1 cl, 6 dwg

FIELD: laser engineering.

SUBSTANCE: invention relates to laser engineering. Universal solid-state laser emitter with non-liquid cooling comprises resonator mounted rigidly on base, a pumping device and a heat exchange unit comprising thermoelectric modules and heat exchangers. Pumping device is designed as a pump module, firmly fixed on base, heat exchange unit is equipped with a heating element, loop of heat pipes with a capacitor plate, thermal interface and temperature sensors installed in heat exchanger plates of capacitor. Resonator structure is deformation-resistant, while optical circuit is made on based on an unstable resonator.

EFFECT: technical result consists in increasing stability of structure to external factors.

1 cl, 4 dwg

FIELD: instrument making.

SUBSTANCE: cooling device of active element of solid-state laser has active element arranged in shell made of optically transparent heat-conducting material and metal lamellae which contact with shell outer side. Between active element and shell there is optically transparent layer, thermal conductivity of which is less than thermal conductivity of shell and active element, and at contact points of the shell and lamellae there is thermal grease.

EFFECT: increase of quality of conductive cooling of active element with high thermal conductivity at lateral pumping.

1 cl, 1 dwg

FIELD: optics.

SUBSTANCE: invention relates to laser engineering. Diode pumped optical amplifier head comprises encased: an active element in form of a rod, matrix of laser diodes arranged regularly on holders, and cooling system containing tube encircling the active element to make a circular channel δ, channels arranged in the housing and each holder, inlet, outlet branch pipes and made in the housing inlet and outlet manifolds, tube is made from material transparent for pumping radiation. Cooling system is in form of a single contour, and the housing of the optical amplifier head is composed of cylinder.

EFFECT: technical result consists in possible reduction of hydraulic resistance of the cooling system.

5 cl, 8 dwg

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