Dynamic correction of thermal focusing in Nd:YAG confocal unstable resonators by use of a variable radius mirror

被引：9

作者：

Moshe, I ^{[1
]}

Jackal, S ^{[1
]}

Lallouz, R ^{[1
]}

机构：

[1] Soreq Nucl Res Ctr, Nonlinear Opt Grp, IL-81800 Yavne, Israel

来源：

APPLIED OPTICS | 1998年 / 37卷 / 30期

关键词：

D O I：

10.1364/AO.37.007044

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Excellent beam quality and divergence stability over a wide pump power range was demonstrated in a Q-switched, Nd:YAG, positive branch confocal unstable resonator by using a one degree-of-freedom adaptive optic. Unlike single-element flexible-membrane mirrors, the variable radius mirror (VRM) consisted of a lens and mirror, whose separation determined the VRM's effective radius of curvature. This simple method enabled low cost and efficient thermal focusing compensation. The VRM was demonstrated by producing a 300-mJ Q-snitch or 1-J free-running at a beam quality factor M-2 that varied between 1.2 and 1.8 as the average output power varied between 0 and 33 W. (C) 1998 Optical Society of America.

引用

页码：7044 / 7048

页数：5

共 14 条

[1] UNSTABLE LASER RESONATORS WITH A SPECIFIED OUTPUT PROFILE BY USING A GRADED-REFLECTIVITY MIRROR - GEOMETRICAL-OPTICS LIMIT [J].

BELANGER, PA ;

PARE, C .

OPTICS COMMUNICATIONS, 1994, 109 (5-6) :507-517

[2] DEFORMABLE MIRROR CORRECTION OF A THERMAL LENS-INDUCED IN THE ACTIVE ROD OF A SOLID-STATE LASER [J].

CHETKIN, SA ;

VDOVIN, GV .

OPTICS COMMUNICATIONS, 1993, 100 (1-4) :159-165

[3] LASERS WITH SUPER-GAUSSIAN MIRRORS [J].

DESILVESTRI, S ;

MAGNI, V ;

SVELTO, O ;

VALENTINI, G .

IEEE JOURNAL OF QUANTUM ELECTRONICS, 1990, 26 (09) :1500-1509

[4] Q-SWITCHED ND-YAG LASER WITH SUPER-GAUSSIAN RESONATORS [J].

DESILVESTRI, S ;

MAGNI, V ;

TACCHEO, S ;

VALENTINI, G .

OPTICS LETTERS, 1991, 16 (09) :642-644

[5] PROPERTIES OF A HIGH-POWER CO2-LASER WITH AN ADAPTIVE MIRROR [J].

DU, KM ;

LOOSEN, P ;

KOCHMANN, H .

OPTICS COMMUNICATIONS, 1994, 106 (4-6) :269-277

[6]

JACKEL S, 1997, Patent No. 121720

[7]

KOECHNER W, 1996, SOLID STATE LASER EN, P204

[8]

KURYASHOV AV, 1996, OPT ENG, V35, P3064

[9] Working beyond the static limits of laser stability by use of adaptive and polarization-conjugation optics [J].

Moshe, I ;

Jackel, S ;

Lallouz, R .

APPLIED OPTICS, 1998, 37 (27) :6415-6420

[10] PROPAGATION OF SUPER-GAUSSIAN FIELD DISTRIBUTIONS [J].

PARENT, A ;

MORIN, M ;

LAVIGNE, P .

OPTICAL AND QUANTUM ELECTRONICS, 1992, 24 (09) :S1071-S1079

← 1 2 →