Passive Q-switched, CW diode pumped Nd-doped YAG and YVO4 lasers

Yehoshua Kalisky; Shuki Levy; Leonid Kravchik

doi:10.1117/12.349225

Passive Q-switched, CW diode pumped Nd-doped YAG and YVO₄ lasers

Yehoshua Kalisky
, Shuki Levy
, Leonid Kravchik

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

9 Scopus citations

Abstract

CW diode pumped solid state lasers have sought for various scientific, medical and military applications, where compact reliable, stable, and highly efficient sources are desirable. There are several applications such as fiber-optic sensing or range finding which require short bursts of high peak power densities at multi-kilohertz repetition rates, and with a good beam quality. An extensive research on the properties of passively Q-switched, CW diode-pumped, ND-lasers has been conducted. We have used various pumping schemes to diode pump the Q-switched Nd:YAG and Nd:YVO₄ laser crystals. Such schemes are transverse pumping by a cylindrical microlens-coupled diode array or longitudinally pumping by a fiber-coupled diode array. The passive Q-switching elements were Cr⁴⁺:YAG (polished, uncoated) and Cr⁴⁺:GGG (polished, coated), which were inserted inside the laser resonator. The 1.06 μm laser emission shows a repetitive modulation in the kHz frequency domain, and temporal bandwidth, full width at half maximum, (FWHM) in the range of 50-600 nsec. The modulation frequency and bandwidth depend on the characteristics of the Q-switching material (e.g. Cr⁴⁺ concentration, sample thickness) and on the input power level of the diode array used. We shall report design parameters and performance of various types of passively Q-switched and free-running diode pumped Nd-lasers. We shall present and discuss methods to increase the efficiency of Q-switched solid state lasers.

Original language	English
Pages (from-to)	109-113
Number of pages	5
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	3610
DOIs	https://doi.org/10.1117/12.349225
State	Published - 1 Jan 1999
Externally published	Yes
Event	Proceedings of the 1999 Laser Material Crystal Growth and Nonlinear Materials and Devices - San Jose, CA, USA Duration: 27 Jan 1999 → 28 Jan 1999

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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Cite this

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title = "Passive Q-switched, CW diode pumped Nd-doped YAG and YVO4 lasers",

abstract = "CW diode pumped solid state lasers have sought for various scientific, medical and military applications, where compact reliable, stable, and highly efficient sources are desirable. There are several applications such as fiber-optic sensing or range finding which require short bursts of high peak power densities at multi-kilohertz repetition rates, and with a good beam quality. An extensive research on the properties of passively Q-switched, CW diode-pumped, ND-lasers has been conducted. We have used various pumping schemes to diode pump the Q-switched Nd:YAG and Nd:YVO4 laser crystals. Such schemes are transverse pumping by a cylindrical microlens-coupled diode array or longitudinally pumping by a fiber-coupled diode array. The passive Q-switching elements were Cr4+:YAG (polished, uncoated) and Cr4+:GGG (polished, coated), which were inserted inside the laser resonator. The 1.06 μm laser emission shows a repetitive modulation in the kHz frequency domain, and temporal bandwidth, full width at half maximum, (FWHM) in the range of 50-600 nsec. The modulation frequency and bandwidth depend on the characteristics of the Q-switching material (e.g. Cr4+ concentration, sample thickness) and on the input power level of the diode array used. We shall report design parameters and performance of various types of passively Q-switched and free-running diode pumped Nd-lasers. We shall present and discuss methods to increase the efficiency of Q-switched solid state lasers.",

author = "Yehoshua Kalisky and Shuki Levy and Leonid Kravchik",

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AU - Kalisky, Yehoshua

AU - Levy, Shuki

AU - Kravchik, Leonid

PY - 1999/1/1

Y1 - 1999/1/1

N2 - CW diode pumped solid state lasers have sought for various scientific, medical and military applications, where compact reliable, stable, and highly efficient sources are desirable. There are several applications such as fiber-optic sensing or range finding which require short bursts of high peak power densities at multi-kilohertz repetition rates, and with a good beam quality. An extensive research on the properties of passively Q-switched, CW diode-pumped, ND-lasers has been conducted. We have used various pumping schemes to diode pump the Q-switched Nd:YAG and Nd:YVO4 laser crystals. Such schemes are transverse pumping by a cylindrical microlens-coupled diode array or longitudinally pumping by a fiber-coupled diode array. The passive Q-switching elements were Cr4+:YAG (polished, uncoated) and Cr4+:GGG (polished, coated), which were inserted inside the laser resonator. The 1.06 μm laser emission shows a repetitive modulation in the kHz frequency domain, and temporal bandwidth, full width at half maximum, (FWHM) in the range of 50-600 nsec. The modulation frequency and bandwidth depend on the characteristics of the Q-switching material (e.g. Cr4+ concentration, sample thickness) and on the input power level of the diode array used. We shall report design parameters and performance of various types of passively Q-switched and free-running diode pumped Nd-lasers. We shall present and discuss methods to increase the efficiency of Q-switched solid state lasers.

AB - CW diode pumped solid state lasers have sought for various scientific, medical and military applications, where compact reliable, stable, and highly efficient sources are desirable. There are several applications such as fiber-optic sensing or range finding which require short bursts of high peak power densities at multi-kilohertz repetition rates, and with a good beam quality. An extensive research on the properties of passively Q-switched, CW diode-pumped, ND-lasers has been conducted. We have used various pumping schemes to diode pump the Q-switched Nd:YAG and Nd:YVO4 laser crystals. Such schemes are transverse pumping by a cylindrical microlens-coupled diode array or longitudinally pumping by a fiber-coupled diode array. The passive Q-switching elements were Cr4+:YAG (polished, uncoated) and Cr4+:GGG (polished, coated), which were inserted inside the laser resonator. The 1.06 μm laser emission shows a repetitive modulation in the kHz frequency domain, and temporal bandwidth, full width at half maximum, (FWHM) in the range of 50-600 nsec. The modulation frequency and bandwidth depend on the characteristics of the Q-switching material (e.g. Cr4+ concentration, sample thickness) and on the input power level of the diode array used. We shall report design parameters and performance of various types of passively Q-switched and free-running diode pumped Nd-lasers. We shall present and discuss methods to increase the efficiency of Q-switched solid state lasers.

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T2 - Proceedings of the 1999 Laser Material Crystal Growth and Nonlinear Materials and Devices

Y2 - 27 January 1999 through 28 January 1999

ER -

Passive Q-switched, CW diode pumped Nd-doped YAG and YVO₄ lasers

Abstract

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