Descriptions:
HGO grows Pr:YLF crystals Protactinium -doped Yttrium Lithium Fluoride crystals. Pr3+:YLF has been found as promising
laser material for producing visible lasers directly and UV lasers through
intracavity second-harmonic generation. Very few laser materials have the necessary properties for the realization
of lasing in the visible spectral range.
Optical and
physical properties of Pr:YLF crystal
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Absorption peak wavelength
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444 nm
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Absorption cross-section at peak
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8 × 10-20 cm2
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Absorption bandwidth at peak wavelength
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~5 nm
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Laser wavelength
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523 nm, 607 nm, 639 nm, 698 nm, 721 nm
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Lifetime of 3P0 energy level
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50 μs
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Emission cross-section
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20 × 10-20 cm2
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Refractive index @1064 nm
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no=1,448, ne=1,470
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dn/dT
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-5,2 × 10-6 (||c) K-1, -7,6 × 10-6 (||a) K-1
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Thermal expansion coefficient
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~16 × 10-6 K-1
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Thermal Conductivity /(W·m-1·K-1)
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6
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Crystal structure
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tetragonal
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Lattice Constants
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a=5.164, c=10.732 Å
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Melting Point
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819°C
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Density
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3,95 g/cm3
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Mohs hardness
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5
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Typical doping level
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<1 at.%
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HGO offers
Pr:YLF specifications:
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Doping(atm%):
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0.1% ~ 2%
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Orientation:
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a-cut/c-cut crystalline direction
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Wavefront Distortion:
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λ/4per inch @ 632.8 nm
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Dimension Tolerances：
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+0.0/-0.05 mm , Length: ±0.1 mm
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Surface Quality:
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10/5 Scratch/Dig MIL-O-1380A
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Parallelism:
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< 10″
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Perpendicularity:
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< 5′
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Clear Aperture:
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> 90%
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Surface Flatness:
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< λ/10 @ 632.8 nm
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Chamfer:
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< 0.1 mm @ 45o
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Barrel Finish
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50-80 micro-inch (RMS) ,
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Size
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Upon customer request
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Coating
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AR/HR/PR coating upon customer’s request
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Damage Threshold
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750MW/CM2 at 1064nm, TEM00, 10ns, 10Hz
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|
Quality Warranty Period
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One
year under proper use
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Other YLF-based Nd/Ho/Tm/Yb/Er/Ce YLF are
also available upon request.
Advantages:
1)
High absorption and emission cross-sections(～10-19cm2)
2)
Good overlapping of the absorption band in the blue
spectral region with the emission
of the InGaN laser diodes and
2ω-OPSL
3)
Diode-pumped solid-state lasers for precise and
efficient processing of metals such as copper or gold, entertainment industry
and science
Why
Choose HGO ?
HG
OPTRONICS.,INC. grow YLF-based crystals in house using CZ growth
technology. The use of high quality starting materials for crystal growth,
whole boule interferometry, precise inspection of scattering particle in
crystal using He-Ne laser and delicated measurement of bulk losses using
spectrophotometer assures that each crystal will comply with customer’s specification and perform well.
And base on our diffusion bonding
technology various YLF-based configurations are availabl to supply,
