CN2762399Y

CN2762399Y - Structure of optica ltransmission in laser

Info

Publication number: CN2762399Y
Application number: CN 200520069615
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 light transfer structure in a laser, which is formed by arraying a group of orthorhombic prisms on the same surface. The orthorhombic prisms are glued into integration between every two orthorhombic prisms or the orthorhombic prisms are independent with certain interval or the orthorhombic prisms are composed of two groups of rectangular prisms and optical medium. The optical medium is arranged between the two groups of rectangular prisms and the optical medium and the rectangular prisms are glued into integration by glue or the orthorhombic prisms adopt the optical glass of the total reflection film of the plating optics. The structure causes the light to acquire an enough long transferring path in the chamber of the laser by making use of the principles of transmission and refraction in the optical material. The utility model is particularly suitable for frequency doubling laser devices in a lower power output chamber and people hope that the laser has smaller volume.

Description

The structure that light transmits in the laser

Technical field

The utility model relates to optical field, relates in particular to the structure that light transmits in the laser.

Background technology

In the intracavity frequency doubling solid state laser, because the output of the laser power of green glow is unstable.Solve its power instability method at present and mainly contain two kinds, a kind of is that the frequency-selecting structure realizes the single longitudinal mode running in the employing chamber, needs a plurality of elements of insertion usually, when especially using the birefringence filter plate, needs very accurately thermostatic control; Another kind method is the length of lengthening resonant cavity, the stability of laser along with prolong two-way time and in length and breadth quantity increase and strengthen, long resonant cavity has greatly reduced the variation of power output in the continuous frequency doubling system, and improved its scrambling, but because the chamber is long long, then whole laser structure is excessive, uses inconvenient.

Summary of the invention

The utility model purpose provides and obtain the structure that sufficiently long light transmits distance in the inner chamber of limited laser.

The utility model purpose is to be achieved through the following technical solutions: this structure is rearranged on one side by the rhombic prism group, is integral by gluing between the rhombic prism, perhaps rhombic prism independence and certain intervals is arranged separately.

The utility model structure also can be formed sandwich construction by one group of rhombic prism group and two groups of right-angle prism groups, and the rhombic prism group is arranged between the right-angle prism group, and is integral by gluing.

The utility model structure also can be made up of two groups of right-angle prism groups and optical medium, and optical medium is arranged between the right-angle prism group, and is integral by gluing.

Optical medium is that the center is glass tube or through hole glass blocks or the two-sided collimating optics glass or the optical flat of circular hole.

The utility model structure also can stick into one by the optical glass and the two sides optics glass cement of two sides light-plated total reflection film, and optical glass is arranged at the both sides of the optical glass of light-plated total reflection film.

The utility model structure also can be an optical flat, and it is shaped as the inequilateral hexahedron that the plane of incidence is parallel with outgoing plane, two reflectings surface are parallel, and wherein two reflectings surface are coated with highly reflecting films.

Adopt above the utility model structure, utilize transmission, the refraction principle of light in optical material, make light in the inner chamber of laser, obtain sufficiently long transmission distance, and structure is extremely simple, be particularly useful for lower-wattage output intracavity frequency doubling laser, because to better power output laser, people are accustomed to the large volume laser, and to low power output laser, people wish that the laser volume is less, can be used for the long long laser of laser cavity, as devices such as ring cavity laser, intracavity frequency doubling laser, interferometers.

Description of drawings

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

Fig. 1 is the schematic diagram of one of the utility model structure;

Fig. 2 is two a schematic diagram of the utility model structure;

Fig. 3 is three a schematic diagram of the utility model structure;

Fig. 4 is four a schematic diagram of the utility model structure;

Fig. 5 is five a schematic diagram of the utility model structure;

Fig. 6 is six a front schematic view of the utility model structure;

Fig. 7 is six a side schematic view of the utility model structure;

Fig. 8 is seven a schematic diagram of the utility model structure;

Fig. 9 is the schematic diagram of the utility model structure applications in semiconductor pumped intracavity frequency doubling laser.

Specific embodiment

As Fig. 1, shown in 8, the utility model structure is by rhombic prism group 101,102,103,104......10N on one side, rearrange, be integral by gluing between the rhombic prism, its gummed mode can adopt optical cement, in-depth optical cement or glue directly bond, perhaps rhombic prism independence and certain intervals is arranged separately, because rhombic prism has the light direction of maintenance invariant feature, the rhombic prism group still has and keeps the direction of light invariant feature, the rhombic prism number is N like this, long is L, thickness is H, when glass refraction is n, its optical path length is NL/n, reach less space and realize long light path, if during the rhombic prism magneto-optical crystal, then can be used as generation and be used for laser than high rotation angle faraday revolving fragment, this structure applications is in semiconductor pumped intracavity frequency doubling laser, light source 801 is by collimater 802, focalizer 803 collimations focus on and form LD (light source) laser, Effect of Back-Cavity Mirror 804 before the laser, be provided with gain medium 805 in 808, one of frequency-doubling crystal 806 and the utility model structure rhombic prism group 807, rhombic prism group 807 obtains sufficiently long light and transmits distance in the inner chamber of limited laser, make intracavity frequency doubling obtain abundant vertical film number, to guarantee the stability of power output.

As shown in Figure 2, the utility model structure is by one group of rhombic prism group 201,202,203,204......20N and two groups of right-angle prism groups 211,212......21M, 211 ', 212 ' ... 21M ' composition sandwich construction, rhombic prism group 201,202,203,204......20N be arranged at right-angle prism group 211,212......21M, 211 ', 212 ' ... between the 21M ', and be integral by gluing, when light from 201 1 end incidents, by 201,202,203 ..., 20N, bring out from 20N one and to return 20N by 21M ' reflection again after penetrating, pass through 20N once more, 20 (N-1) ... 201, return 201 by the reflection of 211 right-angle prisms again ... pass through 201,202 by the 21M reflection like this ... 20N one brings out and penetrates, wherein the rhombic prism length of side is L, refractive index is n, and total like this light path is 2M * NL/n, and this structure three-dimensional utilizes the confined space optical length that extends.

As Fig. 3,4, shown in 5, the utility model structure is by two groups of right-angle prism groups 211,212......21N, 211 ', 212 ' ... 21N ' and optical medium 23 are formed, optical medium 23 is arranged at right-angle prism group 211,212......21N, 211 ', 212 ' ... between the 21N ', and be integral by gluing, optical medium 23 is that the center is glass tube 231 or the two-sided collimating optics glass 233 or the optical flat 234 of circular hole, it can also be the through hole glass blocks, although in glass material, advance to guarantee that light path is few, and advance at air, reduce the absorption of optical material to light.

As Fig. 6, shown in Figure 7, the utility model structure is by the optical glass 601,602 and two sides optical glass 603,604 gluing being integral of two sides light-plated total reflection film, optical glass 603,604 is arranged at the both sides of the optical glass 601,602 of light-plated total reflection film, the reflecting surface of optical glass 601,602 is parallel to each other, when the incident light low-angle incides on 602, light comes back reflective between the reflecting surface of optical glass 601,602, form and Fig. 1 identical functions.

As shown in Figure 8, the utility model structure is an optical flat 701, it is shaped as the inequilateral hexahedron that plane of incidence C is parallel with outgoing plane D, two reflecting surface A, B are parallel, and wherein two reflecting surface A, B are coated with highly reflecting films, and its operation principle is with structure shown in Figure 6.

Optical prism of the present utility model can constitute with glass material, also can be made of magneto-optic memory technique.

Claims

1, the structure that light transmits in the laser is characterized in that: this structure is rearranged on one side by the rhombic prism group, is integral by gluing between the rhombic prism, perhaps rhombic prism independence and certain intervals is arranged separately.

2, the structure that light transmits in the laser, it is characterized in that: this structure is formed sandwich construction by one group of rhombic prism group and two groups of right-angle prism groups, and the rhombic prism group is arranged between the right-angle prism group, and is integral by gluing.

3, the structure that light transmits in the laser, it is characterized in that: this structure is made up of two groups of right-angle prism groups and optical medium, and optical medium is arranged between the right-angle prism group, and is integral by gluing.

4, the structure that light transmits in the laser, it is characterized in that: this structure sticks into one by the optical glass and the two sides optics glass cement of two sides light-plated total reflection film, and optical glass is arranged at the both sides of the optical glass of light-plated total reflection film.

5, the structure that light transmits in the laser, it is characterized in that: this structure is an optical flat, and it is shaped as the inequilateral hexahedron that the plane of incidence is parallel with outgoing plane, two reflectings surface are parallel, and wherein two reflectings surface are coated with highly reflecting films.

6, the structure that light transmits in the laser according to claim 3, it is characterized in that: optical medium is that the center is glass tube or through hole glass blocks or the two-sided collimating optics glass or the optical flat of circular hole.

7, the structure of transmitting according to light in claim 1,2, the 3 or 4 described lasers is characterized in that: the parts in the structure that light transmits are by optical cement or in-depth optical cement or glue bond.