JPS6280363U

JPS6280363U -

Info

Publication number: JPS6280363U
Application number: JP17311085U
Authority: JP
Priority date: 1985-11-11
Filing date: 1985-11-11
Publication date: 1987-05-22

Description

[Brief explanation of the drawing]

第１図はこの考案による面ポンピング型レーザ
の一実施例を示す構成図、第２図は面ポンピング
型レーザのレーザ活性媒質の一例を示す斜視図、
第３図は従来の面ポンピング型レーザの構成図で
ある。図において、１はレーザ活性媒質、２は軸線、
３及び４は光学的平滑面、５及び６は端面、７は
軸線を含み光学的平滑面に垂直な平面、８はレー
ザビーム、９は偏光子、１０はポツケルスセル、
１１は全反射鏡、１２は出力鏡、１３はビーム幅
変換光学系、１４は凹シリンドリカルレンズ、１
５は凸シリンドリカルレンズ、１６は偏光子、１
７はポツケルスセル、１８は全反射鏡である。な
お、図中同一符号は同一、又は相当部分を示す。 FIG. 1 is a configuration diagram showing an embodiment of a surface pumping type laser according to this invention, and FIG. 2 is a perspective view showing an example of the laser active medium of the surface pumping type laser.
FIG. 3 is a block diagram of a conventional surface pumping type laser. In the figure, 1 is the laser active medium, 2 is the axis,
3 and 4 are optically smooth surfaces, 5 and 6 are end faces, 7 is a plane that includes the axis and is perpendicular to the optically smooth surface, 8 is a laser beam, 9 is a polarizer, 10 is a Pockels cell,
11 is a total reflection mirror, 12 is an output mirror, 13 is a beam width conversion optical system, 14 is a concave cylindrical lens, 1
5 is a convex cylindrical lens, 16 is a polarizer, 1
7 is a Pockels cell, and 18 is a total reflection mirror. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims

[Claims for Utility Model Registration] (1) A homogeneous laser active medium in the form of an elongated plate with a rectangular cross section and having at least two optically smooth surfaces substantially parallel to each other, and the optically smooth a laser-active medium through which laser light is incident from one end in an off-axis direction relative to these optically smooth surfaces at an angle of incidence sufficient to cause multiple total internal reflections by each of the surfaces; It's hot,
The optically smooth surface further includes a laser active medium that is irradiated with excitation light from at least one of the optically smooth surfaces to excite atoms and cause population inversion, a polarizer, a Pockels cell, and a resonator that includes an output mirror and a total reflection mirror. A surface pumping type laser, characterized in that a beam width conversion optical system having refractive power in the long side direction of a rectangular cross section perpendicular to the axis of the laser active medium is provided in the resonator. laser. (2) The beam width conversion optical system converts a beam width corresponding to the length of the long side of a rectangle that is the cross-sectional shape of the laser active medium to a beam width approximately equivalent to the length of the short side of the rectangle. A surface pumping type laser according to claim (1) of the utility model registration, characterized in that the laser is configured to: