Some optical properties of Cr4+-doped crystals

B. Lipavsky; Y. Kalisky; Z. Burshtein; Y. Shimony; S. Rotman

doi:10.1016/S0925-3467(99)00020-8

Some optical properties of Cr⁴⁺-doped crystals

B. Lipavsky, Y. Kalisky, Z. Burshtein, Y. Shimony, S. Rotman

Department of Electrical & Computer Engineering

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

55 Scopus citations

Abstract

We summarize briefly some of our past studies, and report of preliminary recent new results concerning the optical properties of Cr⁴⁺-doped crystals that are important for utilization as passive Q-switching devices in Nd:YAG laser systems. The host crystals involved are YAG, YSGG, GGG, LuAG and forsterite. Excited-state lifetimes of 4.0, 1.0 and 1.7 μs were measured by the Cr⁴⁺ fluorescence decay (1.3-1.7 μm) following pulsed excitation at 1064 nm in YAG, YSGG and GGG, respectively. The ground- and excited-state absorption (ESA) cross-sections at λ = 1064 nm were estimated from transmission saturation measurements. For [Cr⁴⁺,Mg²⁺]:YAG the respective results were σ_gs = (3.25 ± 0.15) × 10^-18 cm² and σ_es = (6.25 ± 0.5) × 10^-19 cm². In the orthorhombic forsterite, the cross-sections were polarization dependent. We got σ_gs < (3.3 ± 1) × 10^-19 cm² for E∥a, σ_gs = (23 ± 2) × 10^-19 cm² and σ_es = (9.0 ± 0.7) × 10^-19 cm² for E∥b, and σ_gs = (16 ± 1) × 10^-19 cm² and σ_es = (5.7 ± 0.4) × 10^-19 cm² for E∥c. Polarised ESA spectra were measured between 680 and 960 nm using the pulsed pump/probe technique. At 750 nm we got σ_gs = (110 ± 10) × 10^-19 cm² and σ_es = (25 ± 3) × 10^-19 cm² for E∥b. Passive Q-switching performance of a flashlamp-pumped Nd:YAG laser using an intracavity [Cr⁴⁺,Ca²⁺[:GGG sample is also demonstrated.

Original language	English
Pages (from-to)	117-127
Number of pages	11
Journal	Optical Materials
Volume	13
Issue number	1
DOIs	https://doi.org/10.1016/S0925-3467(99)00020-8
State	Published - 1 Jan 1999
Event	Proceedings of the 1997 1st Spanish-Israeli Workshop on Solid State Lasers - Ein Gedi, Isr Duration: 14 Dec 1997 → 16 Dec 1997

ASJC Scopus subject areas

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

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10.1016/S0925-3467(99)00020-8

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title = "Some optical properties of Cr4+-doped crystals",

abstract = "We summarize briefly some of our past studies, and report of preliminary recent new results concerning the optical properties of Cr4+-doped crystals that are important for utilization as passive Q-switching devices in Nd:YAG laser systems. The host crystals involved are YAG, YSGG, GGG, LuAG and forsterite. Excited-state lifetimes of 4.0, 1.0 and 1.7 μs were measured by the Cr4+ fluorescence decay (1.3-1.7 μm) following pulsed excitation at 1064 nm in YAG, YSGG and GGG, respectively. The ground- and excited-state absorption (ESA) cross-sections at λ = 1064 nm were estimated from transmission saturation measurements. For [Cr4+,Mg2+]:YAG the respective results were σgs = (3.25 ± 0.15) × 10-18 cm2 and σes = (6.25 ± 0.5) × 10-19 cm2. In the orthorhombic forsterite, the cross-sections were polarization dependent. We got σgs < (3.3 ± 1) × 10-19 cm2 for E∥a, σgs = (23 ± 2) × 10-19 cm2 and σes = (9.0 ± 0.7) × 10-19 cm2 for E∥b, and σgs = (16 ± 1) × 10-19 cm2 and σes = (5.7 ± 0.4) × 10-19 cm2 for E∥c. Polarised ESA spectra were measured between 680 and 960 nm using the pulsed pump/probe technique. At 750 nm we got σgs = (110 ± 10) × 10-19 cm2 and σes = (25 ± 3) × 10-19 cm2 for E∥b. Passive Q-switching performance of a flashlamp-pumped Nd:YAG laser using an intracavity [Cr4+,Ca2+[:GGG sample is also demonstrated.",

author = "B. Lipavsky and Y. Kalisky and Z. Burshtein and Y. Shimony and S. Rotman",

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journal = "Optical Materials",

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AU - Lipavsky, B.

AU - Kalisky, Y.

AU - Burshtein, Z.

AU - Shimony, Y.

AU - Rotman, S.

PY - 1999/1/1

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N2 - We summarize briefly some of our past studies, and report of preliminary recent new results concerning the optical properties of Cr4+-doped crystals that are important for utilization as passive Q-switching devices in Nd:YAG laser systems. The host crystals involved are YAG, YSGG, GGG, LuAG and forsterite. Excited-state lifetimes of 4.0, 1.0 and 1.7 μs were measured by the Cr4+ fluorescence decay (1.3-1.7 μm) following pulsed excitation at 1064 nm in YAG, YSGG and GGG, respectively. The ground- and excited-state absorption (ESA) cross-sections at λ = 1064 nm were estimated from transmission saturation measurements. For [Cr4+,Mg2+]:YAG the respective results were σgs = (3.25 ± 0.15) × 10-18 cm2 and σes = (6.25 ± 0.5) × 10-19 cm2. In the orthorhombic forsterite, the cross-sections were polarization dependent. We got σgs < (3.3 ± 1) × 10-19 cm2 for E∥a, σgs = (23 ± 2) × 10-19 cm2 and σes = (9.0 ± 0.7) × 10-19 cm2 for E∥b, and σgs = (16 ± 1) × 10-19 cm2 and σes = (5.7 ± 0.4) × 10-19 cm2 for E∥c. Polarised ESA spectra were measured between 680 and 960 nm using the pulsed pump/probe technique. At 750 nm we got σgs = (110 ± 10) × 10-19 cm2 and σes = (25 ± 3) × 10-19 cm2 for E∥b. Passive Q-switching performance of a flashlamp-pumped Nd:YAG laser using an intracavity [Cr4+,Ca2+[:GGG sample is also demonstrated.

AB - We summarize briefly some of our past studies, and report of preliminary recent new results concerning the optical properties of Cr4+-doped crystals that are important for utilization as passive Q-switching devices in Nd:YAG laser systems. The host crystals involved are YAG, YSGG, GGG, LuAG and forsterite. Excited-state lifetimes of 4.0, 1.0 and 1.7 μs were measured by the Cr4+ fluorescence decay (1.3-1.7 μm) following pulsed excitation at 1064 nm in YAG, YSGG and GGG, respectively. The ground- and excited-state absorption (ESA) cross-sections at λ = 1064 nm were estimated from transmission saturation measurements. For [Cr4+,Mg2+]:YAG the respective results were σgs = (3.25 ± 0.15) × 10-18 cm2 and σes = (6.25 ± 0.5) × 10-19 cm2. In the orthorhombic forsterite, the cross-sections were polarization dependent. We got σgs < (3.3 ± 1) × 10-19 cm2 for E∥a, σgs = (23 ± 2) × 10-19 cm2 and σes = (9.0 ± 0.7) × 10-19 cm2 for E∥b, and σgs = (16 ± 1) × 10-19 cm2 and σes = (5.7 ± 0.4) × 10-19 cm2 for E∥c. Polarised ESA spectra were measured between 680 and 960 nm using the pulsed pump/probe technique. At 750 nm we got σgs = (110 ± 10) × 10-19 cm2 and σes = (25 ± 3) × 10-19 cm2 for E∥b. Passive Q-switching performance of a flashlamp-pumped Nd:YAG laser using an intracavity [Cr4+,Ca2+[:GGG sample is also demonstrated.

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DO - 10.1016/S0925-3467(99)00020-8

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AN - SCOPUS:0033208135

SN - 0925-3467

VL - 13

SP - 117

EP - 127

JO - Optical Materials

JF - Optical Materials

IS - 1

T2 - Proceedings of the 1997 1st Spanish-Israeli Workshop on Solid State Lasers

Y2 - 14 December 1997 through 16 December 1997

ER -

Some optical properties of Cr⁴⁺-doped crystals

Abstract

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