Passive Q-switching of a Tm:YLF laser with a Co2+ doped silver halide saturable absorber

Harel Hecht; Zeev Burshtein; Abraham Katzir; Salman Noach; Maxim Sokol; Eugene Frumker; Ehud Galun; Amiel A. Ishaaya

doi:10.1016/j.optmat.2016.11.022

Passive Q-switching of a Tm:YLF laser with a Co²⁺ doped silver halide saturable absorber

Harel Hecht, Zeev Burshtein, Abraham Katzir, Salman Noach, Maxim Sokol, Eugene Frumker, Ehud Galun, Amiel A. Ishaaya

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

7 Scopus citations

Abstract

We report a successful passive Q-switching of a Tm:YLF laser operating at λ = 1.9 μm, using a Co²⁺:AgCl_0.5Br_0.5 saturable absorber. Approximately 200-ns long, 150 μJ pulses were obtained. Increase in pump energy resulted in repetitive pulsing, with a repetition rate approximately proportional to the pump pulse energy. Room-temperature optical transmission saturation curves measured in ∼1-mm thick Co²⁺:AgCl_0.5Br_0.5 plates yielded a ground state absorption cross section σ_gs=(7.8±0.5)×10⁻¹⁸cm², and an excited state absorption cross section σ_es=(3.3±0.3)×10⁻¹⁸cm², at λ = 1.9 μm. The lifetime of the A₂(⁴F) second excited-state of the octahedral O symmetry was τ^∗=(0.6±0.06)ns.

Original language	English
Pages (from-to)	64-69
Number of pages	6
Journal	Optical Materials
Volume	64
DOIs	https://doi.org/10.1016/j.optmat.2016.11.022
State	Published - 1 Feb 2017

Keywords

Laser materials
Passive Q-switch
Silver halide
Solid-state lasers

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
General Computer Science
Atomic and Molecular Physics, and Optics
Spectroscopy
Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry
Electrical and Electronic Engineering

Access to Document

10.1016/j.optmat.2016.11.022

Cite this

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title = "Passive Q-switching of a Tm:YLF laser with a Co2+ doped silver halide saturable absorber",

abstract = "We report a successful passive Q-switching of a Tm:YLF laser operating at λ = 1.9 μm, using a Co2+:AgCl0.5Br0.5 saturable absorber. Approximately 200-ns long, 150 μJ pulses were obtained. Increase in pump energy resulted in repetitive pulsing, with a repetition rate approximately proportional to the pump pulse energy. Room-temperature optical transmission saturation curves measured in ∼1-mm thick Co2+:AgCl0.5Br0.5 plates yielded a ground state absorption cross section σgs=(7.8±0.5)×10−18cm2, and an excited state absorption cross section σes=(3.3±0.3)×10−18cm2, at λ = 1.9 μm. The lifetime of the A2(4F) second excited-state of the octahedral O symmetry was τ∗=(0.6±0.06)ns.",

keywords = "Laser materials, Passive Q-switch, Silver halide, Solid-state lasers",

author = "Harel Hecht and Zeev Burshtein and Abraham Katzir and Salman Noach and Maxim Sokol and Eugene Frumker and Ehud Galun and Ishaaya, {Amiel A.}",

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T1 - Passive Q-switching of a Tm:YLF laser with a Co2+ doped silver halide saturable absorber

AU - Hecht, Harel

AU - Burshtein, Zeev

AU - Katzir, Abraham

AU - Noach, Salman

AU - Sokol, Maxim

AU - Frumker, Eugene

AU - Galun, Ehud

AU - Ishaaya, Amiel A.

PY - 2017/2/1

Y1 - 2017/2/1

N2 - We report a successful passive Q-switching of a Tm:YLF laser operating at λ = 1.9 μm, using a Co2+:AgCl0.5Br0.5 saturable absorber. Approximately 200-ns long, 150 μJ pulses were obtained. Increase in pump energy resulted in repetitive pulsing, with a repetition rate approximately proportional to the pump pulse energy. Room-temperature optical transmission saturation curves measured in ∼1-mm thick Co2+:AgCl0.5Br0.5 plates yielded a ground state absorption cross section σgs=(7.8±0.5)×10−18cm2, and an excited state absorption cross section σes=(3.3±0.3)×10−18cm2, at λ = 1.9 μm. The lifetime of the A2(4F) second excited-state of the octahedral O symmetry was τ∗=(0.6±0.06)ns.

AB - We report a successful passive Q-switching of a Tm:YLF laser operating at λ = 1.9 μm, using a Co2+:AgCl0.5Br0.5 saturable absorber. Approximately 200-ns long, 150 μJ pulses were obtained. Increase in pump energy resulted in repetitive pulsing, with a repetition rate approximately proportional to the pump pulse energy. Room-temperature optical transmission saturation curves measured in ∼1-mm thick Co2+:AgCl0.5Br0.5 plates yielded a ground state absorption cross section σgs=(7.8±0.5)×10−18cm2, and an excited state absorption cross section σes=(3.3±0.3)×10−18cm2, at λ = 1.9 μm. The lifetime of the A2(4F) second excited-state of the octahedral O symmetry was τ∗=(0.6±0.06)ns.

KW - Laser materials

KW - Passive Q-switch

KW - Silver halide

KW - Solid-state lasers

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DO - 10.1016/j.optmat.2016.11.022

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