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You are here: Home / Laser Products / Laser Crystal / Pr:YLF

Pr: YLF

Case
Description
Feature
Application
News
Case

0.5% Pr:YLF For 522nm
Size: 3 x 3 x 5 mm;
S1:HR@522 nm/AR@444 nm;
S2:AR@522nm;

Description

In Pr: YLF Crystal, the rich energy level structure of Pr + ions can reduce the probability of non-radiative rapidness. Therefore, the pump spectral threshold of Pr: YLF Crystal is low and has a high luminous efficiency. Under LD pump with wavelength of 442nm, Pr: YLF Crystal has five relatively strong absorption peaks, which are 523nm, 604nm, 640nm, 698nm and 720nm respectively. Among them, 570 to 620 nm laser light source has many applications in environmental and medical fields. The laser with 720nm Pr: YLF Crystal doubling frequency into 360nm wavelength through nonlinear Crystal has also made great contribution to the micro manufacturing industry. All these advantages make Pr: YLF Crystal has a very wide range of applications.

Pr: YLF Crystal is suitable for laser emission in visible light region

Pr: YLF Crystal provides a rich laser transition between blue, green, orange and red because its wavelength is in the visible light region. In addition, as a fluoride host, YLF has low non-radiation multi-phonon attenuation and low excited state absorption, thus visible light laser with Pr: YLF Crystal as gain medium can be produced, which is widely used in entertainment industry and environmental lighting engineering.

Feature
  • High absorption and emission cross section (~ 10-19 cm2)
  • Absorption band and emission in the blue spectral region
  • Low non-radiation multi-phonon attenuation and low excited state absorption
  • The wavelength is in the visible region
Application
  • 570nm-620nm lasers are used in astronomy
  • 570nm-620nm lasers are used in medicine
  • 570nm-620nm lasers are used in the environment
  • 570nm-620nm lasers are used in the display field
  • 360nm laser is used in micro-manufacturing
News
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Parameter

Material and Specifications
Orientationa-cut
Parallelism<10〞
Perpendicularity <10′
Surface Quality 10-5 S-D
Wavefront Distortion <λ/4 per inch@632.8 nm<λ/4 per inch@632.8 nm
Surface Flatness <λ/8 @632.8 nm<λ/8 @632.8 nm
Clear Aperture >90%>90%
Face Dimensions Tolerance+0/-0.1 mm
0.1mm@45°0.1mm@45°
Length Tolerance ±0.1mm
Coatings R<1%@440-444nm+R<0.6%
@500-700nm on both faces
Laser Induced Damage Threshold>5J/cm2@532nm, 10ns
Physical and Chemical Properties
Specific mass3.95g/cm3
Melting Point819°C
Thermal Conductivity /(W·m-1·K-1)6
Mohs Hardness 5
Thermal Expansion / 10-6·K-1)~16
Structure SymmetryTetragonal
Optical and Spectral Properties
Typical Doping Level1@.%
Refractive Index (@1064nm)no=1.448, ne=1.470
Lifetime of 3P0 Erbium Energy Level( s)50
Emission Cross Section (10-20/cm2)20 10-20cm²
Absorption Peak Wavelength444nm
Absorption Cross Section at Peak8×10-20cm2
Absorption Bandwidth at Peak Wavelength~5nm
Laser Wavelength523nm, 604nm, 640nm, 698nm and 720nm
Absortion and Emission Spectra
Pr YLF Absorption Spectrum-Laser CrylinkPr YLF Emission Spectrum -Laser Crylink
Pr YLF Emission Spectrum -Laser Crylink 

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