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Fixed Vertical Slits


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Fixed Vertical Slits

Slit WidthTolerance
5 µm ±1 µm
10 µm ±1 µm
15 µm ±1 µm
20 µm ±2 µm
30 µm ±2 µm
40 µm ±2 µm
50 µm ±3 µm
100 µm ±4 µm
150 µm ±4 µm
200 µm ±4 µm

Slit Dimensions & Material

  • Slit Widths Available: 5 - 200 µm (See Table to Right for Details)
  • Slit Height: 3 mm
  • Slit Thickness: 12.8 µm
  • Housing: Ø1" Outer Diameter x 0.10" Thick
  • Slit Material:302 Stainless Steel w/ Black Oxide Finish
  • Unmounted Slit: Ø3/8" (9.5 mm) x 0.0005" (12.8 µm) Thick
  • Position Tolerance of Slit: Ø0.006" (Ø0.15 mm) within the Foil Disk

Damage Thresholds

  • 5x104 W/mm2, 75 ns Pulse @ 700 nm
  • 1x105 W/mm2, 10 ns Pulse @ 700 nm
  • 1x103 W/mm2, CW @ 10.6 µm

These slits are mounted in a Ø1" plate, perfect for mounting in our SM1-series lens tubes (SM1L03).

If you do not see what you need in our stocked offerings below, it is possible to special order slits that are fabricated from different substrate materials, have different slit sizes, incorporate multiple slits in one foil, or provide different slit configurations. Customized housings are also available. Please contact technical support to discuss your specific needs.

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Posted Comments:
Poster: eric
Posted Date: 2012-12-05 23:39:44.82
I'm interested in getting 50 µm vertical slit that is unmounted and does not have the black oxide coating. Could you let me know if it is possible to get this custom part, and if so send me a quote? Thank you.
Poster: cdaly
Posted Date: 2012-12-05 17:44:00.0
Response from Chris at Thorlabs: Thank you for using our feedback. In this case, the slit you need would be a custom item, but one that I believe we can quote for you. I will contact you directly to discuss this further.
Poster: jlow
Posted Date: 2012-11-12 17:05:00.0
Response from Jeremy at Thorlabs: We could supply the mounted slits and pinholes with Ø1/2" outer diameter as a custom. I will get in contact with you directly regarding this.
Poster: acable
Posted Date: 2012-11-08 14:17:43.457
Is it possible to get these in a 1/2" diameter mount.
Poster: tcohen
Posted Date: 2012-06-12 14:10:00.0
Response from Tim at Thorlabs to Karsten: Thank you for contacting us! Although the housing is 1” diameter, the diameter of the standard unmounted slit is 9.5mm. To accommodate your 13mm requirement we will need to discuss your desired specifications. I will contact you directly to continue this conversation.
Poster: karsten.sperlich
Posted Date: 2012-06-12 11:00:24.0
Dear Thorlabs team, I need a 13 µm slit which is 14 mm tall. The S15R with 15 µm would be OK, but the height needs to be at least 13 mm. Furthermore I could use 20 µm, 25 µm and 30 µm. Each at least 13 mm long. If that is possible please send me a quote for these slits. Thanks in advance and best regards, Karsten
Poster: tcohen
Posted Date: 2012-04-03 12:23:00.0
Response from Tim at Thorlabs: We should be able to provide this custom slit for you. I have contacted you directly to get more information.
Poster: Simone.Rupp
Posted Date: 2012-04-03 10:29:28.0
Dear Thorlabs team, is it possible to get a 50µm or 100µm slit that is 6mm tall (instead of the offered 3mm)? If yes, could you contact me with a quote? Thanks!
Poster: jjurado
Posted Date: 2011-08-29 09:28:00.0
Response from Javier at Thorlabs to rmartin: Thank you very much for your feedback! We will review the design of our vertical slits and will let you know if we add this change.
Poster: rmartin
Posted Date: 2011-08-22 13:56:50.0
I have used your fixed vertical slits for spectroscopy and thought after many hours of assembly that if your slit discs had a small hole or dimple (on either side) on the aluminum substrate just inside the area taken up by the retaining ring it would make adjusting it to the opto-mechanical axes (vertical or horizontal) far easier. It would also allow the slit to be held in place while the retaining ring was tightened. Just a suggestion.
Poster: apalmentieri
Posted Date: 2010-03-25 11:01:37.0
A response from Adam at Thorlabs to Vitali: We can offer this quotation. I will contact you directly with a quote and instructions for ordering from South Korea.
Poster: yahtoug
Posted Date: 2010-03-25 10:20:25.0
Please, send me quotation for the customized versions: Two pieces of S100R modified to housing Ø 0.5". Two pieces of S150R modified to housing Ø 0.5". Please, advise how to order from South Korea. Thank you. Vitali.
Poster: yahtoug
Posted Date: 2010-03-25 10:07:08.0
Please, send me quotation for the customized versions: Two pieces of S100R modified to Ø 0.5". Two pieces of S150R also modified to Ø 0.5". Please, advise how to order from South Korea. A lot of thanks. Vitali.
Poster: jens
Posted Date: 2010-02-11 17:41:59.0
A reply from Jens at Thorlabs: yes, we can offer custom versions including unmounted versions. I will contact you regarding the details required for the quote.
Poster: wikszak
Posted Date: 2010-02-11 17:07:05.0
Is it possible to get umounted slits ? That would fit with the diameter of my application... Thanks !
Poster: james.harrison
Posted Date: 2008-07-04 08:28:33.0
Dear Sir/Madame I need to be able to mount an S125R within a 0.5" diameter lens tube, as I have very limited space requirements. Would it be possible to provide me just with the aperature disk to perhaps allow me to mount it within an LMR adapter? Many thanks, James
Poster: technicalmarketing
Posted Date: 2007-12-27 12:29:00.0
Thank you for pointing out that the specifications for the slits needed clarification. This has been done.
Poster: acable
Posted Date: 2007-12-21 12:06:42.0
Please indicate the slit hieght and clean up what you mean by diameter. It is given as 3/8" and 1", just need to note mounted versus unmounted.
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+1 Qty Docs Part Number - Universal/Imperial Price Available / Ships
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S10R Support Documentation S10R Ø1" Mounted Slit, 10 ± 1 µm Wide, 3 mm Tall $100.00
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S15R Support Documentation S15R Ø1" Mounted Slit, 15 ± 1 µm Wide, 3 mm Tall $98.00
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S20R Support Documentation S20R Ø1" Mounted Slit, 20 ± 2 µm Wide, 3 mm Tall $96.00
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S30R Support Documentation S30R Ø1" Mounted Slit, 30 ± 2 µm Wide, 3 mm Tall $96.00
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S40R Support Documentation S40R Ø1" Mounted Slit, 40 ± 2 µm Wide, 3 mm Tall $91.00
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S50R Support Documentation S50R Ø1" Mounted Slit, 50 ± 3 µm Wide, 3 mm Tall $91.00
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S100R Support Documentation S100R Ø1" Mounted Slit, 100 ± 4 µm Wide, 3 mm Tall $91.00
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S150R Support Documentation S150R Ø1" Mounted Slit, 150 ± 4 µm Wide, 3 mm Tall $91.00
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S200R Support Documentation S200R Ø1" Mounted Slit, 200 ± 4 µm Wide, 3 mm Tall $91.00
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