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All Products / Laser Optics / Laser Beam Expanders / Variable Beam Expanders / Research-Grade Variable Beam Expanders
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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

266nm 2.5X - 8X Research-Grade Variable Beam Expander

266nm 2.5X - 8X Research-Grade Variable Beam Expander, #87-565

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Stock #87-565 3-5 days
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Quantity Selector - Use the plus and minus buttons to adjust the quantity. +
S$1,958.00
Qty 1-4
S$1,958.00
Qty 5+
S$1,921.00
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Angle of Incidence (°):
0 ±0.06
Coating:
Laser V-Coat (266nm, 355nm)
Design Wavelength DWL (nm):
266
Entrance Aperture (mm):
15
Exit Aperture (mm):
30
Expansion Power:
2.5X - 8X
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
Fused Silica (Corning 7980)
Length (mm):
157.40
Mounting Threads:
Input: Male C-Thread (1" x 32 TPI)
Output: Male T-Thread (M42 x 0.75)
Transmission (%):
>95 @ DWL
Type:
Beam Expander
Weight (g):
483
Housing Diameter (mm):
51
Transmitted Wavefront, P-V:
<3/4/λ for Input Beam ≤4mm (2.5X-4X)
≤λ/2 for Input Beam ≤2mm (>4X)
Maximum Input Beam Tilt (mrad):
1
Coating Specification:
Rabs <0.25% @ 265 - 267nm
Rabs <0.25% @ 354 - 356nm
Ravg <1.0% @ 260 - 365nm
Wavelength Range (nm):
260 - 365
Style:
Variable Magnification
Damage Threshold, By Design: Damage threshold for optical components varies by substrate material and coating. Click here to learn more about this specification.
2 J/cm2 @ 10ns, 20 Hz, 266nm
Divergence Adjustment:
Non-Rotating Optics
Damage Threshold, Pulsed:
2 J/cm2 @ 266nm, 10ns, 20Hz

Regulatory Compliance

RoHS:
Compliant
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Certificate of Conformance:
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Product Family Description

TECHSPEC® Research-Grade Variable Beam Expanders (RVBX) are ideal for high power laser applications where magnification changes may be required, such as prototyping or R&D. TECHSPEC Research-Grade Variable Beam Expanders feature λ/4 transmitted wavefront, Galilean designs, and high laser damage threshold AR coatings to ensure maximum transmittance while minimizing ghost reflections. Additionally, these beam expanders use internal translation and focusing mechanisms to variable adjust magnification and laser divergence without affecting overall housing length. This compact design removes the need to make system accommodations for changes in length and eases system integration.

TECHSPEC Research-Grade Variable Beam Expanders can be used to determine a system’s required beam magnification in the prototyping phase of development. TECHSPEC® Draconis® Broadband Beam Expanders are available for production or OEM implementation. Please contact our Sales Department for custom magnification requirements.

Laser Optics

Technical Information

2X-8X Research-Grade Variable Beam Expanders - Specifications
Design Wavelength Stock No. Fixed Overall Length A (mm) Mounting Length E (mm) Rotating Numeric Ring Length F (mm) Rotating Alpha Ring Length G (mm)
355nm #87-566 169.7 35.9 90.7 19.4
532nm #87-567 169.3 31.5 70.4 43.7
Broadband VIS (633nm) #87-569 169.3 31.5 70.4 43.7
Broadband NIR (785nm) #87-570 169.3 31.5 70.4 43.7
1064nm #87-568 169.3 31.5 70.4 43.7