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CN-114759423-B - Hybrid device and laser

CN114759423BCN 114759423 BCN114759423 BCN 114759423BCN-114759423-B

Abstract

The application provides a hybrid device and a laser, which mainly relate to the technical field of laser and can solve the problems of numerous optical components, large occupied space and high cost in the existing laser. The mixing device comprises an input end collimator, an output end collimator, a pump light collimator, an isolator, a filter and a beam combining module. The input end collimator is used for receiving signal light, the isolator is used for transmitting the signal light from the direction of the input end collimator to the filter plate, the filter plate is used for filtering the signal light to obtain first light, the pump light collimator is used for receiving pump light, the beam combining module is used for combining the first light and the pump light output by the pump light collimator to obtain first combined light, and the output end collimator is used for outputting the first combined light.

Inventors

  • GUO KAIDONG
  • YUE QIN
  • ZHU SHAOJUN
  • YUE CHAOYU

Assignees

  • 深圳朗光科技有限公司

Dates

Publication Date
20260508
Application Date
20220323

Claims (10)

  1. 1. The hybrid device is characterized by comprising an input end collimator (101), an output end collimator (102), a pump light collimator (103), an isolator core (2), a filter (3) and a beam combining module (4); The input end collimator (101) is used for receiving signal light, the isolator core (2) is used for transmitting the signal light from the direction of the input end collimator (101) to the filter (3), the filter (3) is used for filtering the signal light to obtain first light, the pump light collimator (103) is used for receiving pump light, the beam combination module (4) is used for carrying out beam combination treatment on the first light and the pump light output by the pump light collimator (103) to obtain first combined light, and the output end collimator (102) is used for outputting the first combined light; The input end collimator, the output end collimator and the pump light collimator are optical fiber collimators, the optical fiber collimators comprise optical fibers, a packaging glass tube, a capillary tube and a lens, the optical fibers are fixed in the capillary tube to form an optical fiber head, the end face of the optical fiber head is processed into an inclined plane with the inclination of 8 degrees, the plane end of the lens is processed into an inclined plane with the inclination of 8 degrees, when the collimators are assembled, the optical fiber head and the lens are placed in the packaging glass tube, the optical fiber head and the lens are adjusted to be parallel to each other, Aiming at an input end collimator, the optical fiber of the input end collimator is provided with a lens with a curvature radius of 2.2mm and a lens length of 4.85mm, when the optical fiber head is 0.2mm away from the lens plane, the beam waist diameter of an output light beam of the input end collimator is 0.358 mm, the beam waist distance is 18mm, and the diameter of the output light beam of the optical fiber collimator is 0.2 mm-0.5 mm; Aiming at the output end collimator, the output end collimator is provided with a lens with a curvature radius of 4.45mm and a lens length of 10.2mm, and the diameter of a beam output by the output end collimator analog fiber core is 0.357mm, so that the diameter of the beam output by the optical fiber collimator is 0.20 mm-0.50 mm; for the pump light collimator, the pump light collimator is designed with a lens with a curvature radius of 5mm and a lens length of 10.68mm, and the diameter of the optical fiber cladding receiving light aperture of the pump light collimator is 2.82mm.
  2. 2. The mixing device according to claim 1, characterized in that the mixing device further comprises a pump light source (5), the pump light source (5) being arranged to transmit pump light to the pump light collimator (103).
  3. 3. The hybrid device according to claim 1, further comprising a light splitting sheet (6) and a light splitting end collimator (104), wherein the light splitting sheet (6) is located between the input end collimator (101) and the isolator core (2), the light splitting sheet (6) is configured to split the signal light into two paths, one path of the signal light is output to the isolator core (2), the other path of the signal light is transmitted to a monitor (7), and the monitor (7) is configured to monitor the intensity of the signal light.
  4. 4. A hybrid device according to claim 3, characterized in that the hybrid device further comprises the monitor (7).
  5. 5. The mixing device according to claim 1, further comprising an indication light collimator (105), wherein the indication light collimator (105) is configured to receive indication light, and the beam combination module (4) is specifically configured to perform beam combination processing on the signal light, the pump light and the indication light, so as to obtain the first combined beam.
  6. 6. The hybrid device according to claim 5, further comprising a red laser (8), the red laser (8) being adapted to output the indication light to the indication light collimator (105).
  7. 7. The hybrid device according to claim 5, wherein the beam combining module (4) includes a first wavelength division multiplexer (401) and a second wavelength division multiplexer (402), the first wavelength division multiplexer (401) is configured to combine the first light and the indication light to obtain a second combined light, and the second wavelength division multiplexer (402) is configured to combine the second combined light and the pump light to obtain the first combined light.
  8. 8. The hybrid device of any of claims 1-7, wherein a beam diameter of each fiber collimator in the hybrid device is between 0.20mm and 0.50 mm.
  9. 9. The hybrid device according to any of claims 1-7, further comprising an encapsulation housing (9), wherein the input collimator (101), the output collimator (102), the pump light collimator (103), the isolator core (2), the filter (3) and the beam combining module (4) are encapsulated within the encapsulation housing (9).
  10. 10. A laser comprising a hybrid device according to any of claims 1-9, the hybrid device being located between a secondary amplifier and a tertiary amplifier of the laser.

Description

Hybrid device and laser Technical Field The invention relates to the technical field of laser, in particular to a hybrid device and a laser. Background With the explosive development of lasers, cost reduction is a necessary lesson for every laser manufacturer. Conventional high power fiber lasers typically include a plurality of functional devices, each of which includes a plurality of components, such as an input collimator, an output collimator, and at least one corresponding functional component. Therefore, the existing laser has the problems of numerous components, large occupied space, high cost and the like, and as the functional devices are welded together by a welding machine, a welding point exists, and each welding point can introduce certain welding loss and degradation of the quality of the light beam, so that the quality of the light beam finally transmitted and output by the laser is affected. Disclosure of Invention In order to solve the problems, the application provides a hybrid device and a laser, which can solve the problems of numerous optical components, large occupied space and high cost in the existing laser. In a first aspect, the present application provides a hybrid device comprising an input collimator, an output collimator, a pump light collimator, an isolator core, a filter and a beam combining module. The input end collimator is used for receiving signal light, the isolator core is used for transmitting the signal light from the direction of the input end collimator to the filter plate, the filter plate is used for filtering the signal light to obtain first light, the pump light collimator is used for receiving pump light, the beam combining module is used for combining the first light and the pump light output by the pump light collimator to obtain first combined light, and the output end collimator is used for outputting the first combined light. The mixing device provided by the application integrates components such as an input end collimator, an output end collimator, a pump light collimator, an isolator core, a filter plate and a beam combining module, wherein the isolator core is used for realizing the isolation function of signal light, the filter plate is used for realizing the filtering function of the signal light, and the beam combining module is used for realizing the coupling of the signal light and the pump light, so that on one hand, the mixing device provided by the application can realize multiple functions of a plurality of independent functional devices such as an optical fiber isolator, a mode field matcher, a beam combiner and the like, realizes the integration and miniaturization of the components, and compared with the adoption of the multiple independent functional devices, the mixer reduces the use quantity of the components as a whole, and therefore, the manufacturing cost is saved. On the other hand, the components in the hybrid device provided by the application are not required to be welded together through a welding machine, so that the influence on the quality of light beams caused by welding is reduced. In one possible embodiment, the hybrid component further comprises a pump light source for transmitting pump light to the pump light collimator. Based on the above optional mode, the pump light source is also integrated in the hybrid device, and the pump light source is not required to be welded with other components by using a welding machine, so that the influence on the quality of the light beam caused by welding is further reduced. In one possible design manner, the hybrid device further includes a light splitting sheet and a light splitting end collimator, the light splitting sheet is located between the input end collimator and the isolator core, the light splitting sheet is used for splitting signal light into two paths, one path of signal light is output to the isolator core, the other path of signal light is transmitted to the monitor, and the monitor is used for monitoring the intensity of the signal light. Based on the above-mentioned optional mode, the hybrid device can directly output a path of signal light for monitor monitoring, need not to use the beam splitter alone to carry out the signal light beam splitting, has further realized the integration and the miniaturization of components and parts, has also avoided the influence to the beam quality that produces because of the butt fusion when using the beam splitter alone. In one possible embodiment, the hybrid device further comprises a monitor. Based on the above alternative, the monitor is also integrated in the hybrid device, and the monitor does not need to be welded with other components by using a welding machine, so that the influence on the quality of the light beam due to welding is further reduced. In one possible design manner, the hybrid device further includes an indication light collimator, where the indication light collimator is configured to receive the indication