Optical resonators with orthogonally polarized modes

Details Optical resonators with orthogonally polarized modes Optical resonators with orthogonally polarized modes

2005-02-01

2005-02-01

Porta, David (Department: 2878)

Coherent light generators

Particular beam control device

Mode discrimination

C372S027000, C372S093000, C372S105000, C372S106000

Reexamination Certificate

active

06850544

ABSTRACT:
An optical resonator supporting two sets of simultaneously co-existent oscillation modes (30and31), having polarizations orthogonal to each other. Mode control elements (28and29), such as apertures and phase elements, are introduced into the resonator to allow only preferred modes to exist. The placement and orientation of the sets are designed such that the high intensity zones of one set fall on the nodes or low intensity zones of the other set in an interlaced pattern. Thus, in a laser resonator, better utilization of the gain medium (24) is achieved and the beam quality and brightness over multimode lasing are improved. This configuration improves the performance of high Fresnel number resonators, in both pulsed and continuous lasers, for applications such as scribing, drilling, cutting, target designation and rangefinding. An application of the intra-cavity coherent summation of orthogonally polarized modes is described, whereby azimuthally or radially polarized beams may be obtained.

REFERENCES:
patent: 3605039 (1971-09-01), Harris
patent: 4559627 (1985-12-01), Chun
patent: 4575849 (1986-03-01), Chun
patent: 4637027 (1987-01-01), Shirasaki et al.
patent: 4682340 (1987-07-01), Dave et al.
patent: 4720633 (1988-01-01), Nelson
patent: 4880976 (1989-11-01), Mancuso
patent: 5091912 (1992-02-01), Bretenaker et al.
patent: 5179563 (1993-01-01), Palma et al.
patent: 5230004 (1993-07-01), Nicholson
patent: 5283796 (1994-02-01), Fink
patent: 5412211 (1995-05-01), Knowles
patent: 5473626 (1995-12-01), Fan et al.
patent: 5555253 (1996-09-01), Dixon
patent: 5745511 (1998-04-01), Leger
patent: 5789748 (1998-08-01), Liu
patent: 5917844 (1999-06-01), Hill
patent: 6021140 (2000-02-01), Clark et al.
patent: 6028869 (2000-02-01), Harada et al.
patent: 6292505 (2001-09-01), Takenaka et al.
patent: 6459482 (2002-10-01), Singh
patent: 9734344 (1997-09-01), None
patent: 9850986 (1998-11-01), None
K.M. Abramski et al., “Single-Mode Selection Using Coherent Imaging Within a Slab Waveguide CO2 Laser”, Appl. Phys. Lett. 60(20), May 18, 1992.
Ram Oron et al., “Discontinuous Phase Elements for Transverse Mode Selection in Laser Resonators”, Applied Physics Letters, vol. 74, No. 10, Mar. 8, 1999.
V.G. Niziev, et al., “Influence of Beam Polarization on Laser Cutting Efficiency”, J. Phys. D: Appl. Phys. 32 (1999), 1455-1461.
M.E. Marhic and E. Garmire, “Low-Order TE Operation of a CO2 Laser for Transmission Through Circular Metallic Waveguides”, Appl. Phys. Lett. 38, 1981.
Y. Liu, et al., “Vacuum Laser Acceleration Using a Radially Polarized CO2 Laser beam”, Nuclear Instruments and Methods in Physics Research A 424 (1999), 296-303.
S. Quabis, et al., “Focusing Light to a Tighter Spot”, Optics Communications, 179, pp. 1-7, 2000.
Y. Mushiake, et al., “Generation of Radially Polarized Optical Beam Mode by Laser Oscillation”, Proc. IEEE Lett. 60, p. 1107, 1972.
A.A. Tovar, “Production and Propagation of Cylindrically Polarized Laguerre-Gaussian Laser Beams”, J. Opt. Soc. Am. A. vol. 15, No. 10, Oct. 1998.
A.V. Nesterov et al., “Generation of High-Power Radially Polarized Beam”, J. Phys. D: Appl. Phys. 32 (1999) 2871-2875.
D. Pohl, “Operation of a Ruby Laser in the Purely Transverse Electric Mode TE 01”, Appl. Phys. Lett. vol. 20, No. 7, Apr. 1972.

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