8 results about "Slab laser" patented technology

The application provides a function gradient doped slab laser device, and relates to the technical field of solid-state lasers.The device comprises a pump source, a pump light shaping element and a laser material.The pump light output by the pump source is guided into the laser material through the pump light shaping element, so that the pump light activates the active ions in the laser material to generate laser light.The doping concentration of the laser material satisfies a pre-set doping concentration function, which is used to represent that the materials at different positions in the laser material correspond to different doping concentrations.The technical scheme provided by the application precisely controls the doping concentration of the laser material.Under the condition that the total heat power is unchanged, the temperature distribution of the laser material along the thickness direction is closer to a uniform distribution state, the thermal gradient and thermal effect of the laser material can be reduced, the thermal deformation and thermal stress of the laser material caused by the temperature gradient can be reduced, and the stability and reliability of the function gradient doped slab laser device in operation can be improved.

The application discloses a slab laser and a fixing method thereof, and relates to the technical field of slab lasers. The slab laser comprises a laser shell, a slab assembly, a first ceramic sheet, a second ceramic sheet, a wedge-shaped block and a fastener. The laser shell has a resonant cavity which is in communication with the outside. The slab assembly is arranged in the resonant cavity. The heat generated by the operation of the slab assembly is conducted to the outside of the laser shell through the second ceramic sheet and the wedge-shaped block on one side, and is conducted to the outside through the laser shell on the other side, so that the temperature of the slab assembly is maintained at a low state. The slab laser will not be distorted due to the excessive temperature difference caused by the asymmetric heat dissipation. In addition, the structure of the slab laser is simple, the use of screw holes is reduced, and the processing cost is saved.

This disclosure discloses an internal liquid-cooled laser crystal assembly for a medical laser. One specific embodiment of this internal liquid-cooled laser crystal assembly includes a rectangular slab laser crystal and a fixing device for clamping the slab laser crystal. The contact surface between the fixing device and the slab laser crystal is sealed at the edge. The slab laser crystal has coolant channels parallel to the clamping direction, arranged in two rows along the crystal thickness direction. The thickness of the slab laser crystal and the spacing between two adjacent coolant channels in the same row have a first preset relationship, and the thickness of the coolant channels has a second preset relationship. The slab laser crystal has two optically grade polished surfaces, respectively coated with antireflection films for the pump light and the emitted laser, as light-transmitting end faces. The fixing device has a liquid passage hole. By creating coolant channels within the slab laser crystal, the risk of crystal wavefront distortion is reduced. This improves the energy stability of the laser output.

The application discloses a regenerative amplifier based on a slab medium and a double-end pumping configuration and belongs to the technical field of laser technology and optoelectronic devices. The regenerative amplifier comprises a seed source, a modulator, an amplifier, an isolator, a polarization control element, an electro-optical Q-switching crystal, a slab laser crystal, a double-end pumping system and a resonant cavity structure. The amplifier adopts a slab gain medium, improves the heat dissipation efficiency through the bonding of upper and lower surfaces with heat sinks, uniformly distributes pumping light in the crystal by combining a double-end symmetric pumping mode, and improves energy utilization and beam quality. Seed light repeatedly goes back and forth in the resonant cavity, accumulates energy after multi-pass amplification, and realizes cavity emptying output of high peak power laser pulses through electro-optical Q-switching control. The application effectively solves the problems of the traditional regenerative amplifier, such as serious thermal effect, uneven gain and limited output power, and is suitable for high-energy laser application fields such as laser micro-processing and ultrafast spectroscopy.

The invention provides a sunlight direct pumping slab laser, and belongs to the field of pumping lasers, the sunlight direct pumping slab laser comprises a laser shell, a sunlight collection system is arranged on the surface or the outer side of the laser shell, and the sunlight collection system is used for collecting sunlight and focusing the collected sunlight; a collimating mirror is arranged on the surface of the laser shell or in the laser shell, the collimating mirror is located at the focus position of light beams output by the sunlight collecting system, a gain batten in a flat cuboid shape is arranged on the output side of the collimating mirror, and a reflection cavity mirror and an output cavity mirror are arranged on the two sides of the gain batten in the length direction respectively. And the output cavity mirror is aligned with a laser output window of the laser shell. The invention has the beneficial effects that the operation cost and the energy consumption of the laser can be obviously reduced, efficient and stable sunlight pumping can be realized, and the output power and the light beam quality of the laser are improved.

The invention discloses a surface gain slab laser medium preparation method based on reverse stress engineering, and relates to the technical field of solid laser manufacturing. Through a reverse strategy of doping a seed crystal long pure layer, protective pressure stress is introduced into a growth layer, crack initiation is successfully inhibited, and a composite crystal blank is obtained; cutting the blank along the center of the seed crystal layer to obtain two semi-finished products; after the pure YAG growth face of the semi-finished product is polished, the two pure YAG faces are in butt joint through the homogeneous thermal diffusion bonding technology, and the Yb: YAG / YAG / Yb: YAG sandwich structure batten is manufactured. According to the invention, crystal growth cracks are effectively inhibited, reliable interface bonding is realized, and color center and impure phase defects are eliminated.

The invention provides a multi-pass reflection plate strip laser oscillation device, which relates to the technical field of solid laser, and comprises a pumping source, a first cavity mirror, a second cavity mirror, a first reflection mirror, a second reflection mirror and a laser material, a first reflecting mirror and a second reflecting mirror are respectively arranged on two sides of the laser material; the first cavity mirror and the first reflecting mirror are located on the same side of the laser material, and the second cavity mirror and the second reflecting mirror are located on the same side of the laser material. According to the technical scheme provided by the invention, laser oscillation is realized through multi-pass reflection, and compared with the problems of large light spot aperture, high temperature gradient and poor light beam quality in the width direction in the traditional scheme, the structure uses a smaller light spot aperture to resonate in the cavity, so that the temperature gradient in the area where the light spot is located in the resonance process is small, and the light beam quality is improved. Degradation of light beam quality is greatly reduced, the light beam quality can be obviously improved, pulse output can be achieved by using a small-caliber Q switch in combination with an unstable cavity structure, and amplification or frequency conversion can be continued subsequently.

The application relates to a grounding method and structure of a slab laser, one end of a slab laser body is movably grounded, the other end of the slab laser body is fixedly grounded, when the slab laser is heated and expanded or shrunk due to work, the slab laser body can move a certain distance, the slab laser body will not be seriously deformed due to a large counterforce, normal work of the laser is ensured, and the crown spring structure is rationally designed, the grounding guide shaft stably contacts the crown spring, and grounding failure will not occur.