According to the more complete diffraction theory, a series of new beams was invented both outside and inside laser cavity by using (lambda) /2 phase plate. A new beam with equivalent beam quality factor Me2 less than 1 is achieved on ten-watt CO2 laser and on hundred-Watt and thousand-Watt CO2 laser with axial express flux. It may be named as the first kind of new beam laser. From the point of view of practical applications, we designed and produced a new structure of laser cavity whose output mirror was a special mirror with step reflectivity. We have realized 1000 W new beam on CO2 laser with transverse express flux, which is close to the fundamental mode. It may be named as the second kind new laser beam. Its structure is simpler than others, but it brings excellent results.
A novel method for laser beam smoothing by rotating random phase plate is presented in this paper. A random phase plate for CO2 laser was made, and satisfactory results were obtained. The experimental results coincide very well with theoretical analysis.
A new suggestion that there is a phase jump of (pi) in the boundary wave is put forward in this paper. This suggestion may be a supplement of Huygens-Fresnel principle. Based on this new suggestion, a series of new beam was invented, both outside and inside laser cavity. Especially, a new CO2 laser with equivalent beam quality factor M2e < 1 is achieved. It can be considered as the result of some controllable nonlinear self-focusing, and the physical background of deformed quantum mechanics.
A new suggestion that there is a phase jump of (pi) in the boundary wave is put forward in this paper. This suggestion may be a supplement of Huygens-Fresnel principle. Based on this new suggestion, a series of new beam was invented, both outside and inside laser cavity. Especially, a new CO2 laser with equivalent beam quality factor M2 < 1 is achieved. it can be considered as the result of some controllable nonlinear self-focusing, and the physical background of deformed quantum mechanics.
Focal shift of the zone plate is completely different from the corresponding circular and annular apertures. Focal powers of the zone plate are constant under some conditions but for the latter they are always variables. Astigmatism for a zone plate is also investigated. The sagittal focal surfaces are unchanged but the tangential focal surfaces are changed as a function: cos2(Theta) , besides, it has neither spherical aberration nor coma. They are also completely different from conventional imaging devices.
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