Double-end pumping high-energy 755nm laser

Abstract

The utility model discloses a double-end pumping large-energy 755nm laser, which comprises a first pumping source, a second pumping source, a resonant cavity, a first shaping module and a second shaping module, the resonant cavity is internally provided with emerald arranged between the first pumping source and the second pumping source, and the double-end pumping large-energy 755nm laser further comprises a first shaping module and a second shaping module which are respectively butted with light output ends of the first pumping source and the second pumping source. The resonant cavity further comprises a total reflection mirror, an output mirror, a first coupling mirror and a second coupling mirror, the first coupling mirror is arranged between the first shaping module and the jade, the first coupling mirror and the total reflection mirror are oppositely arranged, the second coupling mirror is arranged between the second shaping module and the jade, and the second coupling mirror and the output mirror are oppositely arranged. According to the scheme that the pumping sources are arranged at the two ends, pumping laser energy is increased, the characteristics that the emerald laser is high in threshold value and oblique efficiency are combined, and therefore 755nm hundred picosecond laser output is greatly improved, and the practical effect is obvious.

Description

Technical Field

[0001] The utility model relates to the field of 100-picosecond lasers, in particular to a double-end pumped high-energy 755nm laser. Background Art

[0002] Lasers are rapidly developing in the field of medical aesthetics. Picosecond lasers, with their shorter pulse widths, result in shorter pulse-tissue interaction time, shorter treatment times, and fewer side effects. High-energy picosecond lasers are increasingly favored in the aesthetic medical field. Picosecond lasers are lasers with picosecond pulse widths. They feature ultrashort pulse widths, adjustable repetition rates, and high pulse energies. They are finding increasingly widespread applications in biomedicine, optical parametric oscillation, and biological microscopy, becoming an increasingly important tool in modern biological imaging and analysis systems.

[0003] At present, the conventional solution to achieve 755nm 100-picosecond output can be achieved by pumping alexandrite with a 532nm laser of the 100-picosecond level. The general 532nm 100-picosecond laser usually outputs hundreds of millijoules, such as 300mJ. In addition, the threshold of alexandrite laser is relatively high, so the output energy of the 755nm 100-picosecond laser in this solution is relatively low due to the relatively low pump light energy. Utility Model Content

[0004] The purpose of this utility model is to solve the problems in the prior art proposed in the background technology. In order to achieve the above purpose, this utility model adopts the following technical solutions:

[0005] A double-end pumped high-energy 755nm laser comprises a first pump source, a second pump source and a resonant cavity. The resonant cavity houses an emerald gem disposed between the first pump source and the second pump source. The resonant cavity also comprises a first shaping module and a second shaping module connected to the light output ends of the first pump source and the second pump source, respectively. The resonant cavity further comprises a total reflection mirror, an output mirror, a first coupling mirror and a second coupling mirror. The first coupling mirror is disposed between the first shaping module and the emerald gem, and the first coupling mirror is disposed opposite to the total reflection mirror. The second coupling mirror is disposed between the second shaping module and the emerald gem, and the second coupling mirror is disposed opposite to the output mirror.

[0006] Preferably, the output wavelength of the pump source 1 and the pump source 2 is 532 nm, the pulse width is on the order of 100 picoseconds, and the energy is 100 millijoules.

[0007] Preferably, the fully reflective mirror coating has HR@755nm.

[0008] Preferably, the coupling mirror 1 and the coupling mirror 2 are coated with AR@532nm and HR@755nm, and the incident angle of the coupling mirror 1 and the coupling mirror 2 is 45 degrees.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] The utility model increases the pump laser energy by setting up pump sources at both ends, and combines the high threshold and high slope efficiency characteristics of the alexandrite laser to achieve a significant increase in the 755nm 100-picosecond laser output. It has a significant effect in actual use and is worthy of promotion and use in the existing market. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the utility model.

[0012] In the figure: 1- pump source 1, 2- pump source 2, 3- emerald, 4- total reflection mirror, 5- output mirror, 6- shaping module 1, 7- coupling mirror 1, 8- shaping module 2, 9- coupling mirror 2. DETAILED DESCRIPTION

[0013] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0014] In the description of the present invention, “plurality” means two or more, unless otherwise clearly defined.

[0015] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0017] Reference Figure 1A double-end pumped high-energy 755nm laser includes a pump source 1, a pump source 2 and a resonant cavity. The resonant cavity has an emerald gem 3 arranged between the pump source 1 and the pump source 2, and also includes a shaping module 1 6 and a shaping module 2 8 respectively connected to the light output ends of the pump source 1 and the pump source 2. The resonant cavity also includes a total reflection mirror 4, an output mirror 5, a coupling mirror 1 7, and a coupling mirror 2 9. The coupling mirror 1 7 is arranged between the shaping module 1 6 and the emerald gem 3, and the coupling mirror 1 7 is arranged opposite to the total reflection mirror 4. The coupling mirror 2 9 is arranged between the shaping module 2 8 and the emerald gem 3, and the coupling mirror 2 9 is arranged opposite to the output mirror 5. Among them, the output wavelength of pump source 1 and pump source 2 is 532nm, the pulse width is in the order of hundreds of picoseconds, and the energy is hundreds of millijoules. The total reflection mirror 4 is coated with HR@755nm, and the coupling mirror 1 7 and coupling mirror 2 9 are coated with AR@532nm and HR@755nm, and the incident angle of coupling mirror 1 7 and coupling mirror 2 9 is 45 degrees.

[0018] Based on the above structural design, when the device is in use, a 532nm laser of hundreds of picoseconds is generated from the pump source 1. The laser generated from the pump source 1 is shaped by the shaping module 16 and pumps the emerald gem 3 through the coupling mirror 17. At the same time, the pump source 2 generates a 532nm laser of hundreds of picoseconds, which is shaped by the shaping module 28 and pumps the emerald gem 3 through the coupling mirror 29. The resonant cavity is composed of a total reflection mirror 4, a coupling mirror 17, the emerald gem 3, a coupling mirror 29, and an output mirror 5. In this way, the total reflection mirror 4 absorbs two pump lights and emits 755nm light. The light oscillates in the resonant cavity and is finally stably output through the output mirror 5.

[0019] It should be noted that shaping module 1 and shaping module 2 both shape pump light, efficiently pumping alexandrite to obtain efficient laser output. This is an existing technical means and will not be elaborated on here.

[0020] The above embodiments are preferred implementation methods of the present invention, but the implementation methods of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that the terms indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

Claims

1. A double-end pumped high-energy 755nm laser, comprising a pump source 1 (1), a pump source 2 (2) and a resonant cavity, wherein the resonant cavity has an emerald (3) disposed between the pump source 1 (1) and the pump source 2 (2), and further comprising a shaping module 1 (6) and a shaping module 2 (8) respectively connected to the light output ends of the pump source 1 (1) and the pump source 2 (2), characterized in that: The resonant cavity further comprises a total reflection mirror (4), an output mirror (5), a coupling mirror 1 (7), and a coupling mirror 2 (9). The coupling mirror 1 (7) is arranged between the shaping module 1 (6) and the jade gem (3), and the coupling mirror 1 (7) is arranged opposite to the total reflection mirror (4). The coupling mirror 2 (9) is arranged between the shaping module 2 (8) and the jade gem (3), and the coupling mirror 2 (9) is arranged opposite to the output mirror (5).

2. A double-end pumped high-energy 755nm laser according to claim 1, characterized in that: The output wavelength of the pump source 1 (1) and the pump source 2 (2) is 532 nm, the pulse width is in the order of 100 picoseconds, and the energy is 100 millijoules.

3. A double-end pumped high-energy 755nm laser according to claim 2, characterized in that: The total reflection mirror (4) is coated with HR@755nm.

4. A double-end pumped high-energy 755nm laser according to claim 3, characterized in that: The coupling mirror 1 (7) and the coupling mirror 2 (9) are coated with AR@532nm and HR@755nm, and the incident angle of the coupling mirror 1 (7) and the coupling mirror 2 (9) is 45 degrees.

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