V:YAG - a new passive Q-switch for diode-pumped solid-state lasers

Malyarevich, A. M.; Denisov, I. A.; Yumashev, K. V.; Mikhailov, V. P.; Conroy, Richard; Sinclair, Bruce

doi:10.1007/s003400050544

Cited by 159 publications

(68 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previous studies of V 3+ :YAG crystals showed that the V 3+ ions can occupy both tetrahedral and octahedral coordinated positions [3]. Peaks at 800, 1140, and 1320 nm on the…”

Section: Introductionmentioning

confidence: 95%

Modeling of Passively Synchronized Dual Wavelength Q-Switched Nd³⁺:YVO₄Lasers

Ghani

Hammadi

2012

Acta Phys. Pol. A

View full text Add to dashboard Cite

A mathematical model describing the sum frequency generation of passively synchronized Q-switched pulses simultaneously emitted from two separate Nd 3+ :YVO4 lasers has been demonstrated. This model describes the temporal behavior of the output pulses, and studies the impact of the pumping energy variation on the characteristics of these pulses (output power, pulse separation, pulse widths, delay time). V 3+ :YAG and Cr 4+ :YAG saturable absorbers and a periodically poled KTP crystal are used to achieve and improve the synchronization of the emitted 1342 nm and 1064 nm wavelengths. The synchronization process generates pulsed yellow light with 593.5 nm wavelength, and it can be realized through adjusting the pumping energy of the gain media.

show abstract

“…Previous studies of V 3+ :YAG crystals showed that the V 3+ ions can occupy both tetrahedral and octahedral coordinated positions [3]. Peaks at 800, 1140, and 1320 nm on the…”

Section: Introductionmentioning

confidence: 95%

Modeling of Passively Synchronized Dual Wavelength Q-Switched Nd³⁺:YVO₄Lasers

Ghani

Hammadi

2012

Acta Phys. Pol. A

View full text Add to dashboard Cite

show abstract

“…Tetrahedral V 3+ in YAG has three absorption bands centered at 600, 800, and 1320 nm, which are attributed to spin allowed transitions from the 3 A 2 ͑ 3 F͒ ground state to the 3 T 1 ͑ 3 P͒, 3 T 1 ͑ 3 F͒, and 3 T 2 ͑ 3 F͒ levels, respectively; a weak and narrow absorption at 1140 nm is attributed to the spin forbidden transition 3 A 2 ͑ 3 F͒ to 1 E͑ 3 D͒. 5,8,9 Likewise, tetrahedral V 3+ in LiAlO 2 , LiGaO 2 , and SrAl 2 O 4 has three absorption bands centered ϳ550, 850, and 1350 nm, which are attributed to transitions from 3 A 2 ͑ 3 F͒ to 3 T 1 ͑ 3 P͒, 3 T 1 ͑ 3 F͒, and 3 T 2 ͑ 3 F͒ levels, respectively. 10 Optical transitions associated with octahedral V 3+ tend to occur at higher energies than tetrahedral V 3+ .…”

mentioning

confidence: 97%

“…This indicates that the three absorption bands belong to the same oxidation state, rather than two or more oxidation states which is commonly observed in transition metal doped glasses 2-4 and crystals. 5 The broadness of the PL spectra indicates that the vanadium ion is in a low crystal field site. A result of this is that the 3 T 2 ͑ 3 F͒ level, which is strongly dependent on crystal field strength, is the lowest energy level.…”

mentioning

confidence: 99%

“…10 Optical transitions associated with octahedral V 3+ tend to occur at higher energies than tetrahedral V 3+ . For example the 3 T 1 ͑ 3 F͒ to 3 T 2 ͑ 3 F͒ and 3 T 1 ͑ 3 P͒ transitions of octahedral V 3+ : YAG occur at 600 and 425 nm, respectively, 5,8,11 at 707 and 440 nm in zirconium fluoride glass 12 and at 724 and 459 nm in phosphate glass. 6 Dopant ions in glasses are generally expected to substitute for network modifier cations.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Spectroscopy of vanadium (III) doped gallium lanthanum sulphide chalcogenide glass

Hughes

Rutt

Hewak

et al. 2007

Applied Physics Letters

View full text Add to dashboard Cite

Vanadium doped gallium lanthanum sulphide glass ͑V:GLS͒ displays three absorption bands at 580, 730, and 1155 nm identified by photoluminescence excitation measurements. Broad photoluminescence, with a full width at half maximum of ϳ500 nm, is observed peaking at 1500 nm when exciting at 514, 808, and 1064 nm. The fluorescence lifetime and quantum efficiency at 300 K were measured to be 33.4 s and 4%, respectively. From the available spectroscopic data, the authors propose the vanadium ions' valence to be 3+ and be in tetrahedral coordination. Chalcogenide glasses have low phonon energies due to the relatively large atomic mass of their constituent atoms. In particular, gallium lanthanum sulphide ͑GLS͒ glass has a maximum phonon energy of 425 cm −1 , which gives it excellent infrared transmission up to 9 m. 1 This low maximum phonon energy enables emission from many transitions within active ion dopants, such as transition metals, which are weakly or not at all observed in other glasses ͑e.g., silica͒ due to their high phonon energies. In this letter we present spectroscopic data for vanadium doped GLS ͑V:GLS͒ glass. We assign a 3+ oxidation state to the vanadium ion and energy levels to the observed transitions by comparisons to previous work on the spectroscopic analysis of V 3+ in other hosts.Samples of V:GLS were prepared by mixing 65% gallium sulphide ͑Ga x S y ͒, 29.95% lanthanum sulphide ͑La 2 S 3 ͒, 5% lanthanum oxide ͑La 2 O 3 ͒, and 0.05% vanadium sulphide ͑V 2 S 3 ͒ ͑mol %͒ in a dry-nitrogen purged glovebox. Gallium and lanthanum sulphides were synthesized in-house from gallium metal ͑9N purity͒ and lanthanum fluoride ͑5N purity͒ precursors in a flowing H 2 S gas system. Before sulphurization, lanthanum fluoride was purified and dehydrated in a dry-argon purged furnace at 1250°C for 36 h to reduce OH − and transition metal impurities. The lanthanum oxide and vanadium sulphide were purchased commercially and used without further purification. The glass was melted in a dryargon purged furnace at 1150°C for 24 h before being quenched and annealed at 400°C for 12 h.Absorption spectra were taken on a Varian Cary 500 spectrophotometer over a range of 175-3300 nm with a resolution of ±0.1 nm. Samples were cut and polished into 5 and 0.5 mm thick slabs, which allowed reflection corrected absorption coefficient spectra to be calculated using.

show abstract

“…For passively Q-switching (PQS) operation of solidstate lasers at 1.3 μm, V 3 :YAG has some remarkable advantage owing to their excellent physical and optical properties, such as high ground-state absorption cross section (σ gsa ) of 7.2 × 10 −18 cm 2 and low residual absorption at 1.3 μm [14]. It has been demonstrated that V 3 :YAG can be an excellent saturable absorber (SA) for Nd lasers operated in the 1.3 μm [8,[15][16][17][18][19].…”

mentioning

confidence: 99%

Efficient dual-wavelength Nd:LuLiF_4 laser

Zhang

Tang

et al. 2013

Opt. Lett.

View full text Add to dashboard Cite

We report an efficient continuous-wave (CW) and passively Q-switched dual-wavelength Nd:LuLiF 4 laser at 1314 and 1321 nm for the first time. Maximum CW output power of 6.08 W is obtained, giving an optical-to-optical conversion efficiency of 30.2% and a slope efficiency of 32.1%. Even using high doping V 3 :YAG as the saturable absorber to passively Q-switch the laser, stable dual-wavelength operation remains. Maximum pulse energy extracted from the resonator is 108.7 μJ at 17.2 kHz pulse-repetition rate, and maximum peak power is 885 W.

show abstract

V:YAG - a new passive Q-switch for diode-pumped solid-state lasers

Cited by 159 publications

References 0 publications

Modeling of Passively Synchronized Dual Wavelength Q-Switched Nd³⁺:YVO₄Lasers

Modeling of Passively Synchronized Dual Wavelength Q-Switched Nd³⁺:YVO₄Lasers

Spectroscopy of vanadium (III) doped gallium lanthanum sulphide chalcogenide glass

Efficient dual-wavelength Nd:LuLiF_4 laser

Contact Info

Product

Resources

About

V:YAG - a new passive Q-switch for diode-pumped solid-state lasers

Cited by 159 publications

References 0 publications

Modeling of Passively Synchronized Dual Wavelength Q-Switched Nd3+:YVO4Lasers

Modeling of Passively Synchronized Dual Wavelength Q-Switched Nd3+:YVO4Lasers

Spectroscopy of vanadium (III) doped gallium lanthanum sulphide chalcogenide glass

Efficient dual-wavelength Nd:LuLiF_4 laser

Contact Info

Product

Resources

About

Modeling of Passively Synchronized Dual Wavelength Q-Switched Nd³⁺:YVO₄Lasers

Modeling of Passively Synchronized Dual Wavelength Q-Switched Nd³⁺:YVO₄Lasers