CN2762397Y

CN2762397Y - Semiconductor pumped solid laser of multi-stage end-pumpeding

Info

Publication number: CN2762397Y
Application number: CN 200520069616
Authority: CN
Inventors: 吴砺
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-01-01
Filing date: 2005-01-01
Publication date: 2006-03-01
Anticipated expiration: 2015-01-01

Abstract

The utility model discloses a semiconductor pumped solid laser of a pump with a multi-stage end surface, which comprises a front and a back lenses of a laser cavity, a group of light sources, a group of collimating focused optical element groups, and a group of laser gain mediums, wherein a polarization prism group is arranged between the optical element groups and the laser gain mediums. The front and the back lenses, the polarization prism group and the laser gain medium are arranged on the same straight line. End surface pump light of all stages is on the same straight line due to the adoption of the polarization prism. Corresponding to the structure of the semiconductor pumped solid laser of a pump with a multi-stage end surface, a series of reflecting mirrors is omitted. The whole laser is caused to become simple and reliable, and simultaneously, more times of pump light end face pumping can be realized. Thereby, high power end face pumping is realized.

Description

A kind of diode pumped solid state laser of multistage end pumping

Technical field

The utility model relates to laser field, relates in particular to a kind of diode pumped solid state laser of multistage end pumping, wherein adopts devating prism.

Background technology

Usually end pumping is most effective diode pumped solid state laser, the end pumping device that is used for the lower-wattage pumping device as shown in Figure 1; Multistage as shown in Figure 2 end pumping device, can form higher laser power output, because the end pumping optical absorption depth is relatively limited, so the power of every grade of end pumping also is limited, for obtaining the normal employing of higher-wattage multistage end pumping structure shown in Figure 2, its shortcoming is that mucosal structure is too complicated, inconvenience during actual the use.

Summary of the invention

The utility model purpose provides a kind of simple in structure, the diode pumped solid state laser of the multistage end pumping that the output laser power is higher.

The utility model purpose is achieved through the following technical solutions: laser comprises the front and back eyeglass of laser cavity, one group of light source, one group of optical elements sets that collimation focuses on, one group of gain medium, wherein be provided with the devating prism group between optical elements sets and gain medium, front and back eyeglass, devating prism group, gain medium are arranged on same the straight line.

Another kind of laser comprises the front and back eyeglass of laser cavity, one group of optical fiber, one group of optical elements sets that collimation focuses on, one group of gain medium wherein is provided with devating prism between optical elements sets and gain medium, front and back eyeglass, devating prism group, gain medium are arranged on same the straight line, the another side of devating prism is provided with work-off (crystal polarization beam apparatus) crystal microchip, collimating lens, the quarter wave plate of relative pump light wavelength, speculum.

The utility model is owing to adopt devating prism, end pumping light at different levels are all on same straight line, the structure of the diode pumped solid state laser of the multistage end pumping of Fig. 2 is saved a series of speculums relatively, make whole laser become simple and reliable, simultaneously can realize more repeatedly pump light end pumping, thereby realize high-power end pumping.

Description of drawings

Now in conjunction with the accompanying drawings the utility model is further elaborated:

Fig. 1 is the structural representation of low-power pump laser;

Fig. 2 is the structural representation of the diode pumped solid state laser of existing multistage end pumping;

Fig. 3 is one of structure of the present utility model schematic diagram;

Fig. 4 is two schematic diagrames of structure of the present utility model;

Fig. 5 is the schematic diagram of one of the devating prism of the utility model employing optical axis of crystal direction;

Fig. 6 is the schematic diagram of two optical axis of crystal directions of the devating prism that adopts of the utility model.

Specific embodiment

As shown in Figure 3, the utility model laser comprises eyeglass 51 before the laser cavity, back eyeglass 52, one group of light source 11,12,13 ... 1n, one group of optical elements sets 21,22,23 that collimation focuses on ... 2n, one group of

devating prism group

31,32,33 ... 3n, one group of

gain medium

41,42,43 ... 4n, one group of light source 11,12,13 wherein ... 1n can be an ordinary light source, also can be light sources such as optical fiber output; Preceding eyeglass 51, back eyeglass 52, one group of

devating prism group

31,32,33 ... 3n, one group of

gain medium

41,42,43 ... 4n is arranged on same the straight line, devating

prism group

31,32,33 ... 3n and

gain medium

41,42,43 ... 4n is and distributes alternately, preceding eyeglass 51, back eyeglass 52 lays respectively at the straight line two ends,

devating prism group

31,32,33 ... 3n is special prism, can also adopt PBS (polarization beam splitting) prism or Glan (Glan) prism, Rochon (Luo Xiong) prism, it is characterized in that will be through the optical elements sets 21 of collimation focusing, 22,23 ... light source 11 after 2n focuses on, 12,13 ... the polarised light that 1n sends as e light from devating

prism

31,32,33 ... the 3n reflecting surface converges to gain

medium

41,42,43 ... on the 4n, laser oscillation cavity light then passes gain medium 41 with O light mode straight line, 42,43 ... 4n and devating

prism

31,32,33 ... 3n is at preceding eyeglass 51, vibration forms laser between the back eyeglass 52, thereby realizes high-power end pumping.

As shown in Figure 4 the utility model laser can also be comprise eyeglass 51 before the laser cavity ', back eyeglass 52 ', one group of optical fiber 11 ', 12 ', the optical elements sets 21 of one group of collimation focusing ', 22 ', one group of devating prism group 31 ', 32 ', one group of gain medium 41 ', 42 ', 43 ', devating prism group 31 ', 32 ' the another side correspondence be provided with one group of collimating lens 61 ', 62 ', 1/4 wave plate 71 of one group of relative pumping light wavelength ', 72 ', one group of work-off crystal microchip 81 ', 82 ', one group of speculum 91 ', 92 ', wave plate 71 ', 72 ' make light pass through speculum 91 ', 92 ', make transmitted light turn to into e light from devating prism 31 ', 32 ' another inclined-plane reflex to another gain media 41 ', 42 ' end face, from devating prism 31 ', 32 ' O the light that appears by work-off crystal microchip 81 ', 82 ' produce little morpheme to move, with compensating polarizing prism 31 ', 32 ' different reflectings surface and the pattern displacement that produces are organized pumping system more and can be realized high-power end pumping equally.Two kinds of

devating prisms

3,3 shown in Fig. 5,6 ', be the crystal of three same materials, form by optical cement or in-depth optical cement bonding, three crystal optical axises are on same plane, wherein two optical axises are parallel to each other, another sheet optical axis and two crystal have certain angle, the direction of arrow is its optical axis of crystal direction, difference is two kinds of devating prisms 3,3 ' middle optical axis of crystal direction difference, light e light all reflects in the total internal reflection mode, the crystal that its O light can directly pass through with linear fashion, on crystal optical cement face since light all with O light, so do not produce light loss.

Claims

1, a kind of diode pumped solid state laser of multistage end pumping, comprise laser cavity front and back eyeglass, one group of light source, one group of optical elements sets that collimation focuses on, one group of gain medium, it is characterized in that: be provided with the devating prism group between optical elements sets and the gain medium, front and back eyeglass, devating prism group, gain medium are arranged on same the straight line.

2, a kind of diode pumped solid state laser of multistage end pumping, comprise laser cavity front and back eyeglass, one group of optical fiber, one group of optical elements sets that collimation focuses on, one group of gain medium, it is characterized in that: be provided with the devating prism group between optical elements sets and the gain medium, front and back eyeglass, devating prism group, gain medium are arranged on same the straight line, the another side of devating prism is provided with the work-off crystal microchip, is crystal polarization beam apparatus crystal microchip, collimating lens, the quarter wave plate of relative pump light wavelength, speculum.

3, the diode pumped solid state laser of a kind of multistage end pumping according to claim 1 is characterized in that: one group of light source 11,12,13 ... 1n is ordinary light source or optical fiber.

4, the diode pumped solid state laser of a kind of multistage end pumping according to claim 1 and 2, it is characterized in that: devating prism, be the crystal of three same materials, form by optical cement or in-depth optical cement bonding, three crystal optical axises are on same plane, wherein two optical axises are parallel to each other, and another sheet optical axis and two crystal have certain angle.

5, the diode pumped solid state laser of a kind of multistage end pumping according to claim 1 and 2, it is characterized in that: devating prism is the PBS prism, is polarization beam splitter prism, or the Glan prism, be Glan prism, or the Rochon prism, be Rochon prism.