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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

25.4mm Dia x 50.8mm FL, 355nm V-Coat, λ/40 Laser Grade Aspheric Lens

TECHSPEC® λ/40 Laser Grade Aspheric Lenses

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Stock #39-556 Other Coating Options
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S$1,077.25
Qty 1+
S$1,077.25
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Diameter (mm):
25.40 +0.00/-0.05
Effective Focal Length EFL (mm):
50.80 @ 355nm
Numerical Aperture NA:
0.25
Back Focal Length BFL (mm):
45.39
Center Thickness CT (mm):
7.98
Coating:
Laser V-Coat (355nm)
Coating Specification:
Rabs <0.25% @ 355nm
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Fused Silica (Corning 7980)
Clear Aperture CA (mm):
21.40
Surface Quality:
10-5
Edge Thickness ET (mm):
4.54
Centering (arcmin):
<1
Bevel:
Protective bevel as needed
f/#:
2
Design Wavelength DWL (nm):
355
Shape of Back Surface:
Plano
Damage Threshold, Pulsed:
7.5 J/cm2 @ 355nm, 20ns, 20Hz
Spot Size (μm):
See Technical Information Tab
Conjugate Distance:
Infinite
Note:
Strehl Ratio is >0.8 by design
Focal Length Specification Wavelength (nm):
355
Asphere Figure Error, RMS @ 632.8nm:
λ/40

Regulatory Compliance

RoHS:

Product Family Description

  • Substrate Shape and Coating Optimized for Nd:YAG Laser Wavelengths
  • λ/40 RMS Asphere Figure Error
  • Stehl Ratio > 0.8

TECHSPEC® λ/40 Laser Grade Aspheric Lenses are polished through precision magnetorheological finishing (MRF), providing them with an ultra-smooth aspheric surface with an aspheric surface tolerance of λ/40 RMS. The aberration free aspheric surfaces produced through this super-polishing process result in these aspheric lenses having diffraction-limited performance at their design wavelengths. A high-performance Laser Line V-Coat minimizes reflection when these aspheric lenses are used at their Nd:YAG wavelengths. TECHSPEC λ/40 Laser Grade Aspheric Lenses feature substrates designed and shaped at their laser wavelength to optimize the entire lens design, not just the anti-reflection coating, for the laser wavelength. Standard imperial sizes of these laser grade aspheres with f/2 designs, made from fused silica, are available.

Technical Information

Technical Information

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