Compare Model Drawings, CAD & Specs Mirror Shape Aperture Parallelism Wavelength Range Coating Type Availability Price
$1,456
In Stock
Hollow Retroreflector 25.4 mm 1 arc sec 400-700 nm Protected Aluminum
In Stock
$1,456
1 Week
Hollow Retroreflector 25.4 mm 1 arc sec 650-16,000 nm Protected Gold
1 Week
$1,456
3 Weeks
Hollow Retroreflector 25.4 mm 1 arc sec 450-10,000 nm Protected Silver
3 Weeks
$1,456
In Stock
Hollow Retroreflector 25.4 mm 1 arc sec 225-700 nm UV Enhanced Aluminum
In Stock
$1,144
In Stock
Hollow Retroreflector 25.4 mm 2 arc sec 400-700 nm Protected Aluminum
In Stock
$1,144
In Stock
Hollow Retroreflector 25.4 mm 2 arc sec 650-16,000 nm Protected Gold
In Stock
$1,144
3 Weeks
Hollow Retroreflector 25.4 mm 2 arc sec 450-10,000 nm Protected Silver
3 Weeks
$1,144
In Stock
Hollow Retroreflector 25.4 mm 2 arc sec 225-700 nm UV Enhanced Aluminum
In Stock
$884
In Stock
Hollow Retroreflector 25.4 mm 5 arc sec 400-700 nm Protected Aluminum
In Stock
$884
In Stock
Hollow Retroreflector 25.4 mm 5 arc sec 650-16,000 nm Protected Gold
In Stock
$884
3 Weeks
Hollow Retroreflector 25.4 mm 5 arc sec 450-10,000 nm Protected Silver
3 Weeks
$884
In Stock
Hollow Retroreflector 25.4 mm 5 arc sec 225-700 nm UV Enhanced Aluminum
In Stock
$1,768
In Stock
Hollow Retroreflector 63.5 mm 1 arc sec 400-700 nm Protected Aluminum
In Stock
$1,768
In Stock
Hollow Retroreflector 63.5 mm 1 arc sec 650-16,000 nm Protected Gold
In Stock
$1,768
2 Weeks
Hollow Retroreflector 63.5 mm 1 arc sec 450-10,000 nm Protected Silver
2 Weeks
$1,768
In Stock
Hollow Retroreflector 63.5 mm 1 arc sec 225-700 nm UV Enhanced Aluminum
In Stock
$1,456
In Stock
Hollow Retroreflector 63.5 mm 2 arc sec 400-700 nm Protected Aluminum
In Stock
$1,456
1 Week
Hollow Retroreflector 63.5 mm 2 arc sec 650-16,000 nm Protected Gold
1 Week
$1,456
In Stock
Hollow Retroreflector 63.5 mm 2 arc sec 450-10,000 nm Protected Silver
In Stock
$1,456
In Stock
Hollow Retroreflector 63.5 mm 2 arc sec 225-700 nm UV Enhanced Aluminum
In Stock
$1,248
In Stock
Hollow Retroreflector 63.5 mm 5 arc sec 400-700 nm Protected Aluminum
In Stock
$1,248
In Stock
Hollow Retroreflector 63.5 mm 5 arc sec 650-16,000 nm Protected Gold
In Stock
$1,248
In Stock
Hollow Retroreflector 63.5 mm 5 arc sec 450-10,000 nm Protected Silver
In Stock
$1,248
In Stock
Hollow Retroreflector 63.5 mm 5 arc sec 225-700 nm UV Enhanced Aluminum
In Stock

Specifications

  • Mirror Shape
    Hollow Retroreflector
  • Aperture
    25.4 mm, 63.5 mm
  • Wavelength Range
    225-700 nm, 400-700 nm, 450-10,000 nm, 650-16,000 nm
  • Material
    Borofloat® 33
  • Parallelism
    1 arc sec, 2 arc sec, 5 arc sec
  • Surface Quality
    80-50 scratch-dig

Features

Alignment-Free 180 Degree Reflection

Retroreflectors, also known as corner cubes as all three mirror surfaces are perpendicular, will reflect all incoming light 180° regardless of incidence angle, resulting in a reflected beam that is precisely parallel to the incident beam. This is achieved without requiring prior alignment (as with a flat mirror). Images reflected by a corner cube are reversed and inverted.

Retroreflector Stability

Our broadband hollow retroreflectors are constructed of three front-surface flat mirrors assembled into a corner cube. A stress-free mounting technique is employed to ensure dimensional stability.

Comparison with Solid Glass Retroreflectors

Hollow retroreflectors offer advantages of more accurate parallelism, ability to accommodate larger beam diameters, and better preservation of polarization compared to solid glass retroreflectors. Our UBBR1-1 hollow retroreflectors provide as low as 1 arc sec return beam accuracy, compared to 2 arc sec provided by our BGR solid glass retroreflectors. The UBBR2.5 hollow retroreflectors' 2.5-in. (63.5-mm) aperture is larger than typical solid glass retroreflectors' diameters. Polarized light traveling through solid glass can result in unpredictable polarization, whereas reflected light from a metallic coating traveling through air in a hollow retroreflector tends to have its polarization preserved better. Finally, for psec and fsec ultrashort pulses, hollow retroreflectors introduce much lower dispersive effects compared to solid glass.

UV Enhanced Aluminum Coating - 225 to 700 nm

Protected Aluminum Coating - 400 to 700 nm

Protected Silver Coating - 450 to 10,000 nm

Protected Gold Coating - 650 to 16,000 nm

Ideal for Optical Delay Lines

One of the most critical factors in achieving reliable delays in an optical delay line is parallelism between (1) the beam traveling to the retroreflecting optics and (2) the beam on its return path. UBBR Series hollow retroreflectors provide 1, 2, and 5 arc second return beam parallelism with no adjustment necessary. UBBR2.5-5 Series hollow retroreflectors, with 2.5 in. (63.5 mm) aperture and 5 arc second parallelism, are key elements in Newport's Optical Delay Line Component Kits that enable faster and easier construction of single, dual, or quadruple pass set ups. These delay line kits are a useful tool for many ultrashort pulse applications.