Neodymium-doped yttrium lithium fluoride

Neodymium-doped yttrium lithium fluoride (Nd:YLF) is a lasing medium for arc lamp-pumped and diode-pumped solid-state lasers. The YLF crystal (LiYF₄) is naturally birefringent, and commonly used laser transitions occur at 1047 nm and 1053 nm.^[1]

It is used in Q-switched systems in part due to its relatively long fluorescence lifetime. As with Nd:YAG lasers, harmonic generation is frequently employed with Q-switched Nd:YLF to produce shorter wavelengths. A common application of frequency-doubled Nd:YLF pulses is to pump ultrafast Ti:Sapphire chirped-pulse amplifiers.

Neodymium-doped YLF can provide higher pulse energies than Nd:YAG for repetition rates of a few kHz or less. Compared to Nd:YAG, the Nd:YLF crystal is very brittle and fractures easily. It is also slightly water-soluble — a YLF laser rod may very slowly dissolve in cooling water which surrounds it.

Physical and chemical properties

Materials: Nd:LiYF4

Modulus of Elasticity: 85 GPa

Crystal Structure: Tetragonal

Cell Parameters: a=5.16 Å , c=10.85 Å

Melting Point: 819 °C

Mohs Hardness: 4~5^[2]

Density: 3.99 g/cm^3

Thermal Conductivity: 0.063 W/cm/K

Specific Heat: 0.79 J/g/K

References

^ Pollak, T.; Wing, W.; Grasso, R.; Chicklis, E.; Jenssen, H. (1982). "CW laser operation of Nd:YLF". IEEE Journal of Quantum Electronics. 18 (2). Institute of Electrical and Electronics Engineers (IEEE): 159–163. Bibcode:1982IJQE...18..159P. doi:10.1109/jqe.1982.1071512. ISSN 0018-9197.
^ Nd:YLF Crystal

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[1] Pollak, T.; Wing, W.; Grasso, R.; Chicklis, E.; Jenssen, H. (1982). "CW laser operation of Nd:YLF". IEEE Journal of Quantum Electronics. 18 (2). Institute of Electrical and Electronics Engineers (IEEE): 159–163. Bibcode:1982IJQE...18..159P. doi:10.1109/jqe.1982.1071512. ISSN 0018-9197.

[2] Nd:YLF Crystal

[1]

[2]

v t e Neodymium compounds
Nd(II)	Nd₂C NdF₂ NdCl₂ NdBr₂ NdH₂ NdI₂ NdS
Nd(III)	NdAl₃(BO₃)₄ NdAsO₄ Nd(CH₃COO)₃ Nd(acac)₃ NdBi NdBr₃ Nd₄C₃ Nd₂(CO₃)₃ Nd₂(C₂O₄)₃ NdCl₃ Nd(ClO₄)₃ NdF₃ NdH₃ Nd(OH)₃ NdI₃ Nd(IO₃)₃ Nd₂(MoO₄)₃ NdNiO₃ NdN Nd(NO₃)₃ Nd₂O₃ Nd(ReO₄)₃ NdPO₄ NdP Nd₂S₃ Nd₂(SO₄)₃ NdTaO₄ Nd₂(WO₄)₃ NdVO₄ Nd(C₅H₅)₃
Nd(IV)	NdF₄

v t e Lithium compounds
Inorganic (list)	Li₂ LiAlCl₄ Li_1+xAl_xGe_2−x(PO₄)₃ LiAlH₄ LiAlO₂ LiAl_1+xTi_2−x(PO₄)₃ LiAs LiAsF₆ Li₃AsO₄ LiAt Li LiB(C₂O₄)₂ LiB(C₆F₅)₄ LiBF₄ LiBH₄ LiBO₂ LiB₃O₅ Li₂B₄O₇ Li₂TiF₆ Li₂ZrF₆ Li₂B₄O₇·5H₂O LiBSi₂ LiBr LiBr·2H₂O LiBrO LiBrO₂ LiBrO₃ LiBrO₄ Li₂C₂ LiCF₃SO₃ CH₃CH(OH)COOLi LiC₂H₂ClO₂ LiC₂H₃IO₂ Li(CH₃)₂N LiCHO₂ LiCH₃O LiC₂H₅O LiCN Li₂CN₂ LiCNO Li₂CO₃ Li₂C₂O₄ LiCl LiCl·H₂O LiClO LiFO LiClO₂ LiClO₃ LiClO₄ LiCoO₂ Li₂CrO₄ Li₂CrO₄·2H₂O Li₂Cr₂O₇ CsLiB₆O₁₀ LiD LiF Li₂F LiF₄Al Li₃F₆Al FLiBe LiFePO₄ FLiNaK LiGaH₄ Li₂GeF₆ Li₂GeO₃ LiGe₂(PO₄)₃ LiH LiH₂AsO₄ Li₂HAsO₄ LiHCO₃ Li₃H(CO₃)₂ LiH₂PO₃ LiH₂PO₄ LiHSO₃ LiHSO₄ LiHe LiI LiIO LiIO₂ LiIO₃ LiIO₄ Li₂IrO₃ Li₇La₃Zr₂O₁₂ LiMn₂O₄ Li₂MoO₄ Li_0.9Mo₆O₁₇ LiN₃ Li₃N LiNH₂ Li₂NH LiNO₂ LiNO₃ LiNO₃·H₂O Li₂N₂O₂ LiNa Li₂NaPO₃ LiNaNO₂ LiNbO₃ Li₂NbO₃ LiO⁻ LiO₂ LiO₃ Li₂O Li₂O₂ LiOH Li₃P LiPF₆ Li₃PO₄ Li₂HPO₃ Li₂HPO₄ Li₃PO₃ Li₃PO₄ Li₂Po Li₂PtO₃ Li₂RuO₃ Li₂S LiSCN LiSH LiSO₃F Li₂SO₃ Li₂SO₄ Li Li₂Se Li₂SeO₃ Li₂SeO₄ LiSi Li₂SiF₆ Li₄SiO₄ Li₂SiO₃ Li₂Si₂O₅ LiTaO₃ Li₂Te LiTe₃ Li₂TeO₃ Li₂TeO₄ Li₂TiO₃ Li₄Ti₅O₁₂ LiTi₂(PO₄)₃ LiVO₃·2H₂O Li₃V₂(PO₄)₃ Li₂WO₄ LiYF₄ Neodymium-doped LiZr₂(PO₄)₃ Li₂ZrO₃
Organic (soaps)	Hemolithin (extraterrestrial protein) Organolithium reagents Gilman reagent CH₃COOLi C₄H₆LiNO₄ LiC₂F₆NO₄S₂ LiN(SiMe₃)₂ Li₃C₆H₅O₇ C₅H₅Li LiN(C₃H₇)₂ (C₆H₅)₂PLi C₁₈H₃₅LiO₃ C₆H₁₃Li C₄H₉Li CH₃CHLiCH₂CH₃ (CH₃)₃CLi C₁₂H₂₈BLi CH₃Li Li⁺C₁₀H₈⁻ C₅H₁₁Li C₅H₃LiN₂O₄ C₆H₅Li LiC₂CH₃ LiO₂C(CH₂)₁₆CH₃ C₄H₅LiO₄ LiEt₃BH LiOC(CH₃)₃ C₉H₁₈LiN LiC₂H₃ Vinyllithium LiC ₁₁H ₂₃COO
Minerals	Amblygonite Berezanskite Brannockite Cryolithionite Darapiosite Darrellhenryite Elbaite Fluorine Elbaite Fluor-liddicoatite Emeleusite Eucryptite LiAlSiO₄ Faizievite Hectorite Hsianghualite Jadarite LiNaSiB₃O₇OH Keatite Li(AlSi₂O₆) Kunzite Lavinskyite Lepidolite Lithiophilite LiMnPO₄ Lithiophosphate Li₃PO₄ Manandonite Manganoneptunite Nambulite Neptunite Olympite Petalite LiAlSi₄0₁₀ Pezzottaite Cs(Be₂Li)Al₂Si₆O₁₈ Rossmanite Saliotite Sogdianite Spodumene LiAl(SiO₃)₂ Sugilite Tiptopite Tourmaline Triphylite LiFePO₄ Zabuyelite Li₂CO₃ Zektzerite Zinnwaldite
Hypothetical	Li_xBe_y HLiHe⁺ LiFHeO LiHe₂ (HeO)(LiF)₂ La_2/3-xLi_3xTiO₃He
Other Li-related	Aluminium–lithium alloys Heteroatom-promoted lateral lithiation LB buffer Lithium atom Lithium medication LiNi_xCo_yAl_zO₂ LiNi_xMn_yCo_zO₂ Lithium soap Lithium Triangle Lucifer yellow Magnesium–lithium alloys NASICON Environmentally friendly red light flare

v t e Solid-state lasers
Distinct subtypes	Semiconductor laser
Yttrium aluminium garnet	Nd:YAG laser Er:YAG laser Nd:Cr:YAG Yb:YAG Nd:Ce:YAG Ho:YAG Dy:YAG Sm:YAG Tb:YAG Ce:YAG Ce:Gd:YAG Gd:YAG
Glass	Nd:glass Er:glass Er:Yb:glass Yb:glass
Other gain media	Ruby laser Yttrium iron garnet (YIG) Terbium gallium garnet (TGG) Ti:sapphire laser Solid-state dye laser (SSDL/SSOL/SSDPL) Yttrium lithium fluoride (YLF) Neodymium-doped yttrium lithium fluoride (Nd:YLF) Yttrium orthovanadate (YVO₄) Neodymium-doped yttrium orthovanadate (Nd:YVO₄) Yttrium calcium oxoborate (YCOB) Nd:YCOB laser Ce:LiSAF Ce:LiCAF Cr:ZnSe U:CaF₂ Sm:CaF₂ Yb:SFAP
Structures	Diode-pumped solid-state laser (DPSSL) Fiber laser Figure-8 laser Disk laser F-center laser
Specific lasers	Trident laser ZEUS-HLONS (HMMWV Laser Ordnance Neutralization System) Nova (laser) Cyclops laser Janus laser Argus laser Shiva laser HiPER Laboratory for Laser Energetics Laser Mégajoule LULI2000 Mercury laser ISKRA-6 Vulcan laser

Physical and chemical properties

See also

References