Innovative 1-Micron Optics for high power fiber lasers
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High Performance Optics For Industrial Fiber Lasers
fiber optics
Ophir optics for 1μm high power fiber lasers
With decades of knowledge and experience in the optical industry, using cutting-edge measurement equipment, Ophir offers a wide array of first-class optical coatings for high power fiber lasers in the 1μm wavelength range, including:

•Protective windows
•Spheric & aspheric lenses
• Optical collimation and focusing assemblies (doublets and singlets)

High power lasers are a growing industry with numerous applications. As technology advances, and lasers become more sophisticated, the optics used in such systems must provide increasingly superior levels of performance. Here's where Ophir steps in. With the 1μm high power laser optics range, Ophir guarantees maximum focus stability and minimum aberrations, by using advanced manufacturing technologies, for high optical performance.
fiber optics

Capabilities

  • High LIDT (laser induced damage threshold) coatings 20J/ cm2
  • Low absorption 10-50ppm
  • High quality fused silica substrates
  • Extensively tested and utilized in laser applications above 8kW
Typical coating features
AOI 0º-15º
%R @1030-1090 < 0.1%, 0.2% per surface
%T @650-670 > 60%-95% (2 sides)
%T@1030nm T > 99.6%
%T@1064nm T > 99.7%
%T@1070-1080nm T > 99.6%
S/D 10-5
Mechanical properties
Elastic (Young's) modulus 73GPa
Poisson's ratio 0.16
Density 2.20g/cm³
Knoop hardness (100g load) 522kg/mm²
Thermal properties
Specific heat 0.770 J/(gK)
Thermal conductivity 1.38W/(mK)
Thermal diffusivity 0.0075 cm²/s
Thermal expansion(ppm/c) 0˚C to 200˚C 0.57x10-6
Refractive index and dispersion
Thermal coefficient ∆n/∆T[ppm/C] 9.6
Wavelength 1064nm
 
fiber optics Ophir aspherical lenses
Aspherical surfaces on collimating and focusing lenses provide improved performance over conventional, spherical surfaces in high-power industrial fiber laser and direct diode laser systems. The aspherical shape of the optics reduces spherical aberration resulting in a smaller spot size, a uniform spot shape and greater depth of focus.

Ophir Fiberlens™ aspheric lenses are available in custom configurations for all high-power industrial fiber laser and direct diode laser systems.
Specification Value / Range Tolerance
Diameter (range) 12.0 – 300.0 mm + 0 / - 0.10 mm
Effective focal length (EFL) 20.0 – 500.0 mm < 0.1%
Lens types Aspherical – plano
Aspherical – spherical
Aspherical – aspherical
 
Clear aperture > 90% of diameter  
Asphere power < 2.0 fringe at 632.8 nm Radius of curvature  
Asphere irregularity < 0.5 fringe at 632.8 nm (P-V)  
Scratch - dig 20-10 or better  
Surface roughness < 2 nm RMS  
Substrate material High-purity, UV-grade fused silica  
Focal length ≤0.1%  
ETV ≤10μm  

Lenses for high power fiber lasers

Ophir P/N Diameter (Inch/ mm) F.L. (inch/ mm) E.T. (mm)
Focusing Doublet
633859-117 1.18/ 30.0 4.92/ 125.00 Assembly #680339-001
633860-117 1.18/ 30.0 4.92/ 125.00
633910-117 1.46/ 37.0 5.91/ 150.00 Assembly #680337-001
633911-117 1.46/ 37.0 5.91/ 150.00
633771-117 1.18/ 30.0 5.91/ 150.00  
633772-117 1.18/ 30.0 5.91/ 150.00  
Collimating Doublet
633861-117 1.18/ 30.0 3.94/ 100.00 Assembly #680340-001
633862-117 1.18/ 30.0 3.94/ 100.00
634132-117 1.46/ 37.0 3.94/ 100.00 Assembly #680355-001
634133-117 1.46/ 37.0 3.94/ 100.00
Single Lens
632284-117 1.50/ 38.1 7.50/ 190.50 7.00
631669-117 1.50/ 38.1 5.00/ 127.00 7.00
632291-117 1.50/ 38.1 7.09/ 180.00 3.00
632292-117 1.50/ 38.1 8.66/ 220.0 3.30
632294-117 2.00/ 50.8 5.91/ 150.00 11.60
633112-117 2.00/ 50.8 7.50/ 190.00 11.45
632331-117 1.18/ 30.0 7.87/ 200.00 2.45
632754-117 1.00/ 25.4 8.00/ ~200.00 6.00
633842-117 1.00/ 25.4 4.43/ 112.5 2.40
633214-117 1.00/ 25.4 3.94/ 100.00 2.00
631521-117 1.38/ 35.0 5.91/ 150.00 9.00
633841-117 1.00/ 25.4 8.86/ 229.00 3.20
633415-117 1.50/ 38.1 8.27/ 210.00 6.38
633120-117 1.97/ 50.0 8.66/ 220.00 2.80
633230-117 1.57/ 40.0 5.91/ 150.00 5.00

Protective windows for high power fiber lasers

fiber optics
Ophir P/N Diameter (Inch/ mm) E.T. (mm)
633267-117 0.85/ 21.5 2
632252-117 0.88/ 22.4 4
632445-117 1/ 25.4 3
633723-117 1/ 25.4 5
633481-117 1/ 25.4 4
632830-117 1.18/ 30.0 5
632240-117 1.18/ 30.0 1.5
632755-117 1.26/ 32.0 6.35
632595-117 1.31/ 33.3 1.5
632251-117 1.34/ 34.0 5
632851-117 1.42/ 36.0 5
633411-117 1.46/ 37.0 7
632958-117 1.5/ 38.1 5
633347-117 1.5/ 38.1 1.5
632933-117 1.65/ 42.0 9
632498-117 1.97/ 50.0 2
632346-117 2/ 50.8 6.35
632713-117 2.17/ 55.0 1.5
633824-117 1.38/ 35.0 1.5