Efficient selection of high-order Laguerre-Gaussian modes in a Q-switched Nd:YAG laser

Amiel A. Ishaaya; Nir Davidson; Galina Machavariani; Erez Hasman; Asher A. Friesem

doi:10.1109/JQE.2002.806164

Efficient selection of high-order Laguerre-Gaussian modes in a Q-switched Nd:YAG laser

Amiel A. Ishaaya, Nir Davidson, Galina Machavariani, Erez Hasman, Asher A. Friesem

Research output: Contribution to journal › Article › peer-review

49 Scopus citations

Abstract

Intra-cavity binary phase elements are incorporated into a Q-switched Nd:YAG laser resonator to obtain efficient high-order transverse mode selection. The resonator configuration is analyzed using the propagation-matrix diagonalization method and the Fox-Li algorithm, and a simple model for predicting the relative output powers of the selected modes is developed. The predicted results are verified experimentally with binary phase elements for selecting the TEM₀₁, TEM₀₂ and TEM₀₃, degenerate Laguerre-Gaussian modes. The output energy per pulse was 15 mJ for the TEM₀₁, 16.5 mJ for TEM₀₂ and 18.3 mJ for TEM₀₃, all higher than the 10mJ for the TEM₀₀. The performance in Q-switched operation was found to be similar to that in free-running operation. The numerical calculations, experimental procedure and experimental results are presented.

Original language	English
Pages (from-to)	74-82
Number of pages	9
Journal	IEEE Journal of Quantum Electronics
Volume	39
Issue number	1
DOIs	https://doi.org/10.1109/JQE.2002.806164
State	Published - 1 Jan 2003
Externally published	Yes

Keywords

Beam shaping
Laser resonators
Mode selection
Phase elements
Q-switched lasers
Solid-state lasers

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1109/JQE.2002.806164

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title = "Efficient selection of high-order Laguerre-Gaussian modes in a Q-switched Nd:YAG laser",

abstract = "Intra-cavity binary phase elements are incorporated into a Q-switched Nd:YAG laser resonator to obtain efficient high-order transverse mode selection. The resonator configuration is analyzed using the propagation-matrix diagonalization method and the Fox-Li algorithm, and a simple model for predicting the relative output powers of the selected modes is developed. The predicted results are verified experimentally with binary phase elements for selecting the TEM01, TEM02 and TEM03, degenerate Laguerre-Gaussian modes. The output energy per pulse was 15 mJ for the TEM01, 16.5 mJ for TEM02 and 18.3 mJ for TEM03, all higher than the 10mJ for the TEM00. The performance in Q-switched operation was found to be similar to that in free-running operation. The numerical calculations, experimental procedure and experimental results are presented.",

keywords = "Beam shaping, Laser resonators, Mode selection, Phase elements, Q-switched lasers, Solid-state lasers",

author = "Ishaaya, {Amiel A.} and Nir Davidson and Galina Machavariani and Erez Hasman and Friesem, {Asher A.}",

year = "2003",

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AU - Ishaaya, Amiel A.

AU - Davidson, Nir

AU - Machavariani, Galina

AU - Hasman, Erez

AU - Friesem, Asher A.

PY - 2003/1/1

Y1 - 2003/1/1

N2 - Intra-cavity binary phase elements are incorporated into a Q-switched Nd:YAG laser resonator to obtain efficient high-order transverse mode selection. The resonator configuration is analyzed using the propagation-matrix diagonalization method and the Fox-Li algorithm, and a simple model for predicting the relative output powers of the selected modes is developed. The predicted results are verified experimentally with binary phase elements for selecting the TEM01, TEM02 and TEM03, degenerate Laguerre-Gaussian modes. The output energy per pulse was 15 mJ for the TEM01, 16.5 mJ for TEM02 and 18.3 mJ for TEM03, all higher than the 10mJ for the TEM00. The performance in Q-switched operation was found to be similar to that in free-running operation. The numerical calculations, experimental procedure and experimental results are presented.

AB - Intra-cavity binary phase elements are incorporated into a Q-switched Nd:YAG laser resonator to obtain efficient high-order transverse mode selection. The resonator configuration is analyzed using the propagation-matrix diagonalization method and the Fox-Li algorithm, and a simple model for predicting the relative output powers of the selected modes is developed. The predicted results are verified experimentally with binary phase elements for selecting the TEM01, TEM02 and TEM03, degenerate Laguerre-Gaussian modes. The output energy per pulse was 15 mJ for the TEM01, 16.5 mJ for TEM02 and 18.3 mJ for TEM03, all higher than the 10mJ for the TEM00. The performance in Q-switched operation was found to be similar to that in free-running operation. The numerical calculations, experimental procedure and experimental results are presented.

KW - Beam shaping

KW - Laser resonators

KW - Mode selection

KW - Phase elements

KW - Q-switched lasers

KW - Solid-state lasers

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Efficient selection of high-order Laguerre-Gaussian modes in a Q-switched Nd:YAG laser

Abstract

Keywords

ASJC Scopus subject areas

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