Solid Silicon Etalons

Solid silicon etalons are interesting because the high index of silicon (3.4 depending on wavelength) creates a reasonably high finesse without any coatings. The temperature sensitivity of silicon can also be useful (or problematic). These etalons are often used to monitor the wavelengths of long wavelength lasers.

  • Material: Silicon
  • Wavelength range: IR 1.2um to 6.3um
  • Wedge < 0.5 arc second*
  • Surface quality: 40/20 or better
  • Surface figure: λ/20
  • Mounting: the 8x8mm and 14x14mm etalons can be cemented to a 1" diameter holder
  • Finesse is ~2.5 dependent on the wavelength
  • Thickness: see table
  • * If your etalons require coatings then we can use our fluid jet polishing system to reduce the wedge and increase the finesse
  • We have two standard sizes for the silicon etalons 

Contact us anytime for custom items - that's what we do

8 X 8MM THIN SILICON ETALONS
$600

1660GHz Solid Silicon Etalon

Part Number: OP-3852-25
Details: 0.025mm thick, 8mm x 8mm, clear aperture 5mm

$590

1300GHz Solid Silicon Etalon

Part Number: OP-3852-30
Details: 0.030mm thick, 8mm x 8mm, clear aperture 5mm

$575

1080GHz Solid Silicon Etalon

Part Number: OP-3852-40
Details: 0.040mm thick, 8mm x 8mm, clear aperture 5mm

$565

830GHz Solid Silicon Etalon

Part Number: OP-3852-50
Details: 0.050mm thick, 8mmx8mm, clear aperture 5mm

$535

415GHz Solid Silicon Etalon

Part Number: OP-3852-100
Details: 0.100mm thick, 8mm x 8mm, clear aperture 5mm diameter

$520

100GHz Solid Silicon Etalon

Part Number: OP-3852-416
Details: 0.416mm thick, 8mm x 8mm, clear aperture 5mm diameter

$510

50GHz Solid Silicon Etalon

Part Number: OP-3852-831
Details: 0.831mm thick, 8mm x 8mm, clear aperture 5mm diameter

$70

8mm Etalon Mount

Part Number: OP-4397-8
Details: 1" diameter aluminum mount designed to hold a 8mm x 8mm etalon.  Price includes cemented the etalon to the mount at LigthMachinery.

THICK SILICON ETALONS
$400

4.1mm Solid Silicon Etalon

Part Number: OP-2638-4155
Details: 4.155mm long,  ~10GHz, 1" diameter

$500

8.3mm Solid Silicon Etalon

Part Number: OP-2638-8311
Details: 8.311mm long,  ~5GHz, 1" diameter

$600

16mm Solid Silicon Etalon

Part Number: OP-2638-16622
Details: 16.622mm long, ~2.6GHz, 1" diameter

$1500

41mm Solid Silicon Etalon

Part Number: OP-2638-41555
Details: 41.555mm long, ~1GHz, 1" diameter

$1800

83mm Solid Silicon Etalon

Part Number: OP-2638-83110
Details: 83.110mm long, ~0.5GHz, 1" diameter

learn more about etalons!
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Etalons

Learn more about the various types of etalons we can make (and see some cool pictures)

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Optical Design Center

Design etalons, lenses, resonators, VIPA's and explore optical material properties.

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Fluid Jet Polishing

Learn more about Fluid Jet Polishing, it is one of our enabling technologies