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 Yong Hee
Nd YLF
    Publish time 2022-12-27 10:32    
Nd YLF

Nd:YLF  is a solid state laser material which can be pumped with ARC lamp or laser diodes. Because of its relatively long fluorescence lifetime it can be used in Q-switched systems. One of main frequency-doubled Nd:YLF pulses application is to pump ultrafast Ti:Sapphire chirped-pulse amplifiers.


Advantages:

High power, low beam divergence, efficient single mode operation

High average power Q-switching at a moderate repetition rate

Linear polarized resonators for Q-switching and frequency doubling

Thermal lensing lower than that of YAG

1053nm output of Nd:YLF matches gain curves of Nd:Glass and performs well as an oscillator and pre-amplifier for this host


Nd:YLF crystal emission (lasing):

Both emission wavelengths of Neodymium-doped YLF (Nd:YLF) depends on polarization:

1047 nm (strongest lasing peak) has π polarization (a-axis)

1053 nm (lasing peak) is for σ polarization (c-axis)

Nd:YLF is sometimes preferred substitute for Nd:YAG crystal


Specifications:

 Dopant Concentration

 0.8~1.0 at%

 Orientation

 <100> or <001> within 5°

 Wavefront Distortion

 ≤0.25 λ /inch@632.8nm

 Extinction Ratio

 >25dB (depends on the actual diameter)

 Dimension Tolerances

 Diameter:+0.0/-0.05 mm,   Length: +/-0.5 mm

 Surface Quality

 10/5 Scratch/Dig

 Parallelism

 <10″

 Perpendicularity

 <5′ 

 Clear Aperture

 >90%

 Surface Flatness

 <λ/10@632.8 nm

 Chamfer

 <0.15mm@45deg

 Barrel Finish

 Fine grind

 Anti-Reflection Coating

 R<0.25%@1047/1053nm   

 Diameter

 3~8mm

 Length

 10~130mm


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