Cr:LiSAF Crystal | Chromium-Doped Lithium Strontium Aluminum Fluori...

Data sheet

Density	3.45 g/cm³
Melting Piont	766 ℃
Molecular Formula	Cr3+:LiSrAlF6

More info

Cr:LiSAF (Chromium-Doped Lithium Strontium Aluminum Fluoride) Crystal is a high-performance laser material, ideal for ultrashort pulse generation and high-power applications. With a broad near-infrared emission band, it supports mode-locking and produces pulses as short as 10 fs. The crystal features low loss (0.2%/cm) and high slope efficiency (above 50%), with a lasing threshold as low as 2 mW. Cr:LiSAF's nonlinear refractive index is about four times lower than that of Ti:sapphire, reducing unwanted nonlinear effects in ultrafast pulse generation and amplification. Heeger Materials provides high-quality Cr:LiSAF Crystal for advanced applications.

Cr:LiSAF Crystal | Chromium-Doped Lithium Strontium Aluminum Fluoride Crystal

Cr:LiSAF Crystal Properties

Chemical Formula	Cr3+:LiSrAlF6
Crystal Structure	Trigonal system
Space Group	P31c
Lattice Constants	a=5.084 Å, c=10.21 Å
Cr Atomic Concentration (1% Doping)	8.75×10^19 (at/cm^3)
Fracture Toughness (Mpam)	0.40 (∥c)
Melting Point	766 ℃
Density	3.45 g/cm^3
Elastic Modulus	109 GPa
Thermal Expansion Coefficient	-10×10^-6 /K (∥c), 25×10^-6 /K (⊥c)
Thermal Conductivity	3.3 W/m/K (∥c), 3.0 W/m/K (⊥c)
Specific Heat	0.842 J/g•K @ 25℃
Emission Peak Wavelength	846 nm
Peak Stimulated Emission Cross-Section	4.8×10^-20 cm^2 (∥c)
Fluorescence Lifetime	67 µs
Scattering Loss	<0.2%/cm
Thermo-Optic Coefficient dn/dT	-4.8×10^-6 /℃ (∥c), -2.5×10^-6 /℃ (⊥c)
Sellmeier Equation (λ in µm)	nc² = 1.98448 + 0.00235 / (λ² - 0.010936) - 0.01057 λ²
	na² = 1.97673 + 0.00309 / (λ² - 0.00935) - 0.00828 λ²
Typical Refractive Index	Wavelength (nm)	nc	na
	846	1.407	1.405
	670	1.409	1.407
	423	1.413	1.412
	290	1.420	1.420
	266	1.422	1.424

Cr:LiSAF Crystal Specifications

Doping Concentration	Cr: 0.5~1.0 at.%
Dimensions	Round rod diameter: 2-16 mm
Dimensions	Length: 1-60 mm
Surface Quality	10/5 per MIL-PRF-13830B standard
Flatness	λ/8 @ 633 nm
Parallelism	20″
Perpendicularity	≦15′
Chamfer	≤0.2@45°
Anti-Reflection Coating Reflectance	R<0.10% @ 850 nm
Crystal Orientation	a-cut
Effective Aperture	>90%
Surface Dimension Tolerance	+0/-0.1 mm
Length Tolerance	±0.1 mm
Coating	AR (R<1%) @ 670 nm + AR (R<0.5%) @ 700-1100 nm on both faces
Laser Damage Threshold	>10 J/cm^2 @ 2060 nm, 10 ns

Cr:LiSAF Crystal Stock Dimensions

Face Dimensions	Length	Face	Doping Concentration	Coating
5x5 mm	12 mm	Brewster Angle	3%	AR/AR @ 670 nm + 700-1100 nm
5x5 mm	12 mm	Right Angle Cut	3%	Uncoated

Cr:LiSAF Crystal Absorption and Emission Curve

Cr:LiSAF Crystal Key Features

Wide absorption and emission bands
Nonlinear refractive index approximately four times lower than Ti:sapphire
Custom crystals are available upon request

Cr:LiSAF Crystal Applications

Femtosecond Lasers: Used in femtosecond laser systems for ultrafast pulse generation, producing pulses as short as 10 fs.
CPA Laser Systems: Ideal for chirped pulse amplification (CPA) systems, enhancing high-power pulse generation.
High-Energy Lasers: Suitable for applications requiring high energy storage and conversion efficiency in laser systems.
Laser Amplification: Cr:LiSAF’s low nonlinear refractive index makes it perfect for high-power laser amplification.
Scientific Research: Widely used in research fields such as spectroscopy, material processing, and medical imaging due to its high performance and reliability.

Cr:LiSAF Crystal Packing And Shipping

Cr:LiSAF (Chromium-Doped Lithium Strontium Aluminum Fluoride) Crystal will be securely packaged in sturdy containers with cushioning materials to prevent movement or damage during shipping. This careful packaging ensures that the product arrives in perfect condition, maintaining its high-quality standards throughout the delivery process.

Where to Buy Cr:LiSAF Crystal in Bulk?

Heeger Materials Inc., a professional supplier and manufacturer of high-quality Laser Crystals products including Cr:LiSAF (Chromium-Doped Lithium Strontium Aluminum Fluoride) Crystal, leverages extensive expertise in supply and export to offer competitive prices. We provide customized solutions to meet specific requirements, ensuring exceptional quality and customer satisfaction.

Heeger Materials Inc. was established in 2016 in Colorado, USA. We specialize in premium-grade metals, alloys, ceramics, powders, and other materials catering to research, development, and large-scale industrial production in scientific and industrial sectors.

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