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Broadband Hollow Retroreflectors

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Overview

Our broadband hollow retroreflectors are constructed of three front-surface mirrors assembled into a cornercube. The patented fabrication technique enables as fine as 1 arc second return beam parallelism with ≤λ/3 wavefront distortion at an affordable price.

Stress-free mounting for thermal stability
As low as 1 arc sec return beam accuracy
UV, visible, VIS-IR or IR coatings
Total wavefront distortion ≤λ/3
25.4 and 63.5 mm aperture sizes

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Products

Showing 24 of 24 total products

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Compare	Model	Aperture	Parallelism	Wavelength Range	Coating Type	Availability	Price	Brand
UBBR1-1 Hollow Retroreflector, Broadband, 1.0 in, 1 arc sec, 400-700 nm $1,610.00 Contact Us	UBBR1-1 Hollow Retroreflector, Broadband, 1.0 in, 1 arc sec, 400-700 nm	25.4 mm	1 arc sec	400-700 nm	Protected Aluminum	Contact Us	$1,610.00	Newport
UBBR1-1I Hollow Retroreflector, Broadband, 1.0 in, 1 arc sec, 650-16,000 nm $1,610.00 In Stock	UBBR1-1I Hollow Retroreflector, Broadband, 1.0 in, 1 arc sec, 650-16,000 nm	25.4 mm	1 arc sec	650-16,000 nm	Protected Gold	In Stock	$1,610.00	Newport
UBBR1-1S Hollow Retroreflector, Broadband, 1.0 in, 1 arc sec, 450-10,000 nm $1,676.00 In Stock	UBBR1-1S Hollow Retroreflector, Broadband, 1.0 in, 1 arc sec, 450-10,000 nm	25.4 mm	1 arc sec	450-10,000 nm	Protected Silver	In Stock	$1,676.00	Newport
UBBR1-1UV Hollow Retroreflector, Broadband, 1.0 in, 1 arc sec, 225-700 nm $1,676.00 In Stock	UBBR1-1UV Hollow Retroreflector, Broadband, 1.0 in, 1 arc sec, 225-700 nm	25.4 mm	1 arc sec	225-700 nm	UV Enhanced Aluminum	In Stock	$1,676.00	Newport
UBBR1-2 Hollow Retroreflector, Broadband, 1.0 in, 2 arc sec, 400-700 nm $1,265.00 In Stock	UBBR1-2 Hollow Retroreflector, Broadband, 1.0 in, 2 arc sec, 400-700 nm	25.4 mm	2 arc sec	400-700 nm	Protected Aluminum	In Stock	$1,265.00	Newport
UBBR1-2I Hollow Retroreflector, Broadband, 1.0 in, 2 arc sec, 650-16,000 nm $1,265.00 In Stock	UBBR1-2I Hollow Retroreflector, Broadband, 1.0 in, 2 arc sec, 650-16,000 nm	25.4 mm	2 arc sec	650-16,000 nm	Protected Gold	In Stock	$1,265.00	Newport
UBBR1-2S Hollow Retroreflector, Broadband, 1.0 in, 2 arc sec, 450-10,000 nm $1,317.00 In Stock	UBBR1-2S Hollow Retroreflector, Broadband, 1.0 in, 2 arc sec, 450-10,000 nm	25.4 mm	2 arc sec	450-10,000 nm	Protected Silver	In Stock	$1,317.00	Newport
UBBR1-2UV Hollow Retroreflector, Broadband, 1.0 in, 2 arc sec, 225-700 nm $1,317.00 In Stock	UBBR1-2UV Hollow Retroreflector, Broadband, 1.0 in, 2 arc sec, 225-700 nm	25.4 mm	2 arc sec	225-700 nm	UV Enhanced Aluminum	In Stock	$1,317.00	Newport
UBBR1-5 Hollow Retroreflector, Broadband, 1.0 in, 5 arc sec, 400-700 nm $930.00 In Stock	UBBR1-5 Hollow Retroreflector, Broadband, 1.0 in, 5 arc sec, 400-700 nm	25.4 mm	5 arc sec	400-700 nm	Protected Aluminum	In Stock	$930.00	Newport
UBBR1-5I Hollow Retroreflector, Broadband, 1.0 in, 5 arc sec, 650-16,000 nm $930.00 In Stock	UBBR1-5I Hollow Retroreflector, Broadband, 1.0 in, 5 arc sec, 650-16,000 nm	25.4 mm	5 arc sec	650-16,000 nm	Protected Gold	In Stock	$930.00	Newport

Showing 1 to 010 of 24 entries

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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.