Create an Account  |   Log In

View All »Matching Part Numbers


Your Shopping Cart is Empty
         

UV Fused Silica Ground Glass Diffusers


  • Superior Transmission in UV Range
  • Offered in 120, 220, 600, and 1500 Grit Polishes
  • Polished for Greater Uniformity than Sand Blasting

DGUV10-120

DGUV10-220

Application Idea

DGUV10-600 Mounted in KB1P Quick-Release Mount

Related Items


Please Wait
Diffuser Selection Guide
Ground Glass Diffusers
Standard Diffusers N-BK7 Substrate Unmounted, Uncoated 350 nm to 2.0 µm
Unmounted, AR Coated 350 nm - 700 nm
650 nm - 1050 nm
Mounted, Uncoated 350 nm - 2.0 µm
UVFS Substrate Unmounted, Uncoated 185 nm - 2.0 µm
Diffuse Reflectors N-BK7 Substrate Unmounted, UV-Enhanced Aluminum Coated 250 nm - 450 nm
Unmounted, Protected Silver Coated 450 nm - 20 µm
Unmounted, Protected Gold Coated 800 nm - 20 µm
Alignment Disks
Engineered Diffusers
Diffuser Kits

Features

  • Ø1" Round Diffusers
  • UV Fused Silica Substrate
  • Greater than 90% Transmission Above 225 nm
  • Gaussian Spatial Profile
  • Clear Aperture: >90% Diameter

Thorlabs' UV Fused Silica Ground Glass Diffusers produce a Gaussian intensity profile from an input light source. Unlike our diffusers based on N-BK7 substrates, UV fused silica is highly transmissive at wavelengths below 350 nm. In addition, UV fused silica exhibits virtually no laser-induced fluorescence (as measured at 193 nm), making it an ideal choice for applications in a range spanning the ultraviolet to the near infrared. See the Comparison tab for a side-by-side comparison of the wavelength-dependent transmission of N-BK7 and UV fused silica.

These diffusers feature 120, 220, 600, or 1500 grit polishes. Our polishing process results in a surface with significantly greater uniformity than sandblasted diffusers. The various grits provide a range from fine to coarse scattering. A finer grit (e.g. 1500) has a small diffusion pattern, while a coarser grit (e.g. 120) will have a larger diffuser pattern. See the plot to the right to compare the performance of our diffusers and the Graphs tab to see the transmission through the diffusers.

When mounting the diffusers, the grit polished side should face away from the source. Thorlabs offers fixed lens mounts to hold these diffusers.

If transmission in the ultraviolet range is not necessary for your application, please consider our line of N-BK7 Ground Glass Diffusers.

DGUV Schematic
Common Specifications
Diameter1.00"
Diameter Tolerance+0.00/-0.25 mm
Thickness2.0 mm
Thickness Tolerance±0.2 mm
Clear Aperture>90% Diameter
Surface Flatness of Smooth Side
(@ 633 nm)
Surface Quality of Smooth Side80-50 Scratch-Dig
Parallelism<3 arcmin

 

Item #Grit
DGUV10-120120
DGUV10-220220
DGUV10-600600
DGUV10-15001500

Please note that the transmission values are affected by the manner in which the data is collected. An integrating sphere is used along with a spectrometer, and as the grit values get smaller the light is more dispersed, making it difficult to collect all of the light into the spectrometer. Therefore, lower grit values will appear to have a lower transmission.

Comparison of N-BK7 and UV Fused Silica

N-BK7 is a popular substrate because of its low cost and excellent transmission in the visible and near-infrared portions of the spectrum. However, its transmission drops off sharply at wavelengths shorter than 350 nm. For applications in the ultraviolet portion of the spectrum, UV fused silica is a superior alternative. UV fused silica offers high transmission deep into the ultraviolet, good homogeneity, and a lower coefficient of thermal expansion than N-BK7. In addition, UV fused silica exhibits virtually no laser-induced fluorescence (as measured at 193 nm), making it an ideal choice for applications from the UV to the near IR. See the graph to the right for a comparison between N-BK7 and UV fused silica.

Thorlabs also offers N-BK7 Ground Glass Diffusers for applications where UV transmission is not a requirement.


Posted Comments:
Hashimadelbanah  (posted 2018-10-15 04:38:15.013)
Hi, I would like to know what is the damage threshold for this diffuser? In other words, what is the maximum power this diffuser can hold out? One last question, what does Grit means? Thanks.
nbayconich  (posted 2018-10-23 04:32:28.0)
Thank you for contacting Thorlabs. We have note done official laser damage threshold testing for our N-BK7 ground glass diffusers, however being that the surfaces are ground and not polished as our windows are, the theoretical damage threshold for N-BK7 diffusers would be lower than that of a N-BK7 polished window. The grit number refers to the size of the grit used to polish the surface of the N-BK7 material, lower grit number meaning a coarser or larger grit particle size. I will reach out to you directly to discuss your application.
nimrod.nisism  (posted 2018-09-27 16:51:23.163)
I would like to purchase the the DGUV10-1500 but with larger diameter > 2" can you help me ? BR, Nimrod Nissim
YLohia  (posted 2018-09-27 12:30:29.0)
Hello Nimrod, we will reach out to you directly to discuss the feasibility of offering this. Custom items should be requested by contacting techsupport@thorlabs.com.
Based on your currency / country selection, your order will ship from Newton, New Jersey  
+1 Qty Docs Part Number - Universal Price Available
DGUV10-120 Support Documentation
DGUV10-120Customer Inspired! Ø1" UV Fused Silica Ground Glass Diffuser, 120 Grit
$29.16
Today
DGUV10-220 Support Documentation
DGUV10-220Customer Inspired! Ø1" UV Fused Silica Ground Glass Diffuser, 220 Grit
$29.16
Today
DGUV10-600 Support Documentation
DGUV10-600Customer Inspired! Ø1" UV Fused Silica Ground Glass Diffuser, 600 Grit
$29.16
Today
DGUV10-1500 Support Documentation
DGUV10-1500Customer Inspired! Ø1" UV Fused Silica Ground Glass Diffuser, 1500 Grit
$29.16
Today
Log In  |   My Account  |   Contact Us  |   Careers  |   Privacy Policy  |   Home  |   FAQ  |   Site Index
Regional Websites: West Coast US | Europe | Asia | China | Japan
Copyright 1999-2019 Thorlabs, Inc.
Sales: 1-973-300-3000
Technical Support: 1-973-300-3000


High Quality Thorlabs Logo 1000px:Save this Image