Transformation of a High Order Mode Intensity Distribution to a Nearly Gaussian beam

G. Machavariani; N. Davidson; A. A. Ishaaya; A. A. Friesem; E. Hasman

doi:10.1117/12.537696

Transformation of a High Order Mode Intensity Distribution to a Nearly Gaussian beam

G. Machavariani, N. Davidson, A. A. Ishaaya, A. A. Friesem, E. Hasman

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

A simple method for obtaining a nearly Gaussian laser beam from a high order Hermite-Gaussian mode is presented. The method is based on separating the equal lobes of the high order mode and combining them together coherently. The method was experimentally verified with an arrangement of three mirrors, a 50% beam splitter and a phase tuning plate. The beam quality factor calculated in x-direction for the resulting output beam is 1.045, being very close to that of ideal Gaussian beam. The calculated power leakage is only 1.5 %. The experimental near-field and far-field intensity distributions of the output beam have nearly Gaussian cross sections in both the x and the y directions, with M²_x=1.34 and M²_y=32. With some modifications, it is possible to obtain an output beam with M² _x=1.15 and no power leakage.

Original language	English
Pages (from-to)	271-275
Number of pages	5
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5147
DOIs	https://doi.org/10.1117/12.537696
State	Published - 1 Dec 2003
Externally published	Yes
Event	ALT'02 International Conference on Advanced Laser Technologies - Adelboden, Switzerland Duration: 15 Sep 2002 → 20 Sep 2002

Keywords

Beam quality
Beam shaping
Interference
Laser beams
Mode selection
Phase elements

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.537696

Cite this

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title = "Transformation of a High Order Mode Intensity Distribution to a Nearly Gaussian beam",

abstract = "A simple method for obtaining a nearly Gaussian laser beam from a high order Hermite-Gaussian mode is presented. The method is based on separating the equal lobes of the high order mode and combining them together coherently. The method was experimentally verified with an arrangement of three mirrors, a 50% beam splitter and a phase tuning plate. The beam quality factor calculated in x-direction for the resulting output beam is 1.045, being very close to that of ideal Gaussian beam. The calculated power leakage is only 1.5 %. The experimental near-field and far-field intensity distributions of the output beam have nearly Gaussian cross sections in both the x and the y directions, with M2x=1.34 and M2y=32. With some modifications, it is possible to obtain an output beam with M2 x=1.15 and no power leakage.",

keywords = "Beam quality, Beam shaping, Interference, Laser beams, Mode selection, Phase elements",

author = "G. Machavariani and N. Davidson and Ishaaya, {A. A.} and Friesem, {A. A.} and E. Hasman",

year = "2003",

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language = "English",

volume = "5147",

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journal = "Proceedings of SPIE - The International Society for Optical Engineering",

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note = "ALT'02 International Conference on Advanced Laser Technologies ; Conference date: 15-09-2002 Through 20-09-2002",

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TY - JOUR

T1 - Transformation of a High Order Mode Intensity Distribution to a Nearly Gaussian beam

AU - Machavariani, G.

AU - Davidson, N.

AU - Ishaaya, A. A.

AU - Friesem, A. A.

AU - Hasman, E.

PY - 2003/12/1

Y1 - 2003/12/1

N2 - A simple method for obtaining a nearly Gaussian laser beam from a high order Hermite-Gaussian mode is presented. The method is based on separating the equal lobes of the high order mode and combining them together coherently. The method was experimentally verified with an arrangement of three mirrors, a 50% beam splitter and a phase tuning plate. The beam quality factor calculated in x-direction for the resulting output beam is 1.045, being very close to that of ideal Gaussian beam. The calculated power leakage is only 1.5 %. The experimental near-field and far-field intensity distributions of the output beam have nearly Gaussian cross sections in both the x and the y directions, with M2x=1.34 and M2y=32. With some modifications, it is possible to obtain an output beam with M2 x=1.15 and no power leakage.

AB - A simple method for obtaining a nearly Gaussian laser beam from a high order Hermite-Gaussian mode is presented. The method is based on separating the equal lobes of the high order mode and combining them together coherently. The method was experimentally verified with an arrangement of three mirrors, a 50% beam splitter and a phase tuning plate. The beam quality factor calculated in x-direction for the resulting output beam is 1.045, being very close to that of ideal Gaussian beam. The calculated power leakage is only 1.5 %. The experimental near-field and far-field intensity distributions of the output beam have nearly Gaussian cross sections in both the x and the y directions, with M2x=1.34 and M2y=32. With some modifications, it is possible to obtain an output beam with M2 x=1.15 and no power leakage.

KW - Beam quality

KW - Beam shaping

KW - Interference

KW - Laser beams

KW - Mode selection

KW - Phase elements

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U2 - 10.1117/12.537696

DO - 10.1117/12.537696

M3 - Conference article

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SN - 0277-786X

VL - 5147

SP - 271

EP - 275

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

T2 - ALT'02 International Conference on Advanced Laser Technologies

Y2 - 15 September 2002 through 20 September 2002

ER -

Transformation of a High Order Mode Intensity Distribution to a Nearly Gaussian beam

Abstract

Keywords

ASJC Scopus subject areas

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