Here is a list of our standard solid fused silica etalons (we make a lot of custom etalons so feel free to send us a request if these don't meet your needs or you require a thin film coating to enhance the finesse).  Solid fused silica etalons are simple devices with a wide variety of applications in spectroscopy and lasers.  We have 3 styles of fused silica etalon;

Uncoated 2x4mm Etalons - Very small etalons that our customers usually cement on one end to a holder.  The small size is preferred for use inside small laser cavities 

Uncoated 5x5mm Etalons - Slightly larger versions that are easier to manipulate with human hands

Etalons with Dielectric coatings for higher finesse

Solid Fused Silica Etalons Finesse 6, 450nm to 650nm

Solid Fused Silica Etalons Finesse  >30, 530nm to 660nm

Solid Fused Silica Etalons Finesse  >30, 700nm to 850nm

Solid Fused Silica Etalons Finesse  >30, 850nm to 1100nm

Solid Fused Silica Etalons Finesse  >30, 1450nm to 1700nm

Also, check out our metal coated fused silica etalons, lower finesse but very broadband - Metalons

All of our catalog fused silica etalons have the following standard specifications 

  • Wedge: 0.1 arc second typical
  • Clear aperture: 85% of outside dimension
  • Surface quality: 10/5 or better
  • Material: Fused Silica
  • Matched surface figure: λ/100

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

FUSED SILICA ETALONS
UNCOATED 2MMX4MM FUSED SILICA ETALONS
$165

2x4mm Solid FS Etalon 25um thick

Part Number: OP-2040-25
Details: 2mm x 4mm, 25um thick, FSR 4023GHz, uncoated, finesse = 0.6

$150

2x4mm Solid FS Etalon 50um thick

Part Number: OP-2040-50
Details: 2mm x 4mm, 50um thick, FSR 2011GHz, uncoated, finesse = 0.6

$135

2x4mm Solid FS Etalon 88um thick

Part Number: OP-2040-88
Details: 2mm x 4mm, 88um thick, FSR 1143GHz, uncoated, finesse = 0.6

$120

2x4mm Solid FS Etalon 100um thick

Part Number: OP-2040-100
Details: 2mm x 4mm, 100um thick, FSR 1005GHz, uncoated, finesse = 0.6

$105

2x4mm Solid FS Etalon 200um thick

Part Number: OP-2040-200
Details: 2mm x 4mm, 200um thick, FSR 502GHz, uncoated, finesse = 0.6

$100

2x4mm Solid FS Etalon 300um thick

Part Number: OP-2040-300
Details: 2mm x 4mm, 300um thick, FSR 335GHz, uncoated, finesse = 0.6

$70

1/2" diameter mount for 2 x 4mm etalons

Part Number: OP-4443
Details: A 1/2" diameter aluminum mount designed to hold 2x4 mm etalons.  The  price includes cementing of the etalon to the mount at LightMachinery. 

UNCOATED 5MMX5MM FUSED SILICA ETALONS
$330

5x5mm Solid FS Etalon 25um thick

Part Number: OP-3644-25
Details: 5mmx5mm, 25um thick, FSR 4023GHz, uncoated, finesse = 0.6

$300

5x5mm Solid FS Etalon 50um thick

Part Number: OP-3644-50
Details: 5mmx5mm, 50um thick, FSR 2011GHz, uncoated, finesse = 0.6

$270

5x5mm Solid FS Etalon 88um thick

Part Number: OP-3644-88
Details: 5mmx5mm, 88um thick, FSR 1143GHz, uncoated, finesse = 0.6

$240

5x5mm Solid FS Etalon 100um thick

Part Number: OP-3644-100
Details: 5mmx5mm, 100um thick, FSR 1005GHz, uncoated fused silica etalon

$234

5x5mm Solid FS Etalon 107um thick

Part Number: OP-3644-107
Details: 5mmx5mm, 107um thick, FSR 940GHz, uncoated, finesse = 0.6

$210

5x5mm Solid FS Etalon 200um thick

Part Number: OP-3644-200
Details: 5mmx5mm, 200um thick, FSR 502GHz, uncoated, finesse = 0.6

$200

5x5mm Solid FS Etalon 300um thick

Part Number: OP-3644-300
Details: 5mmx5mm, 300um thick, FSR 335GHz, uncoated, finesse = 0.6

$200

5x5mm Solid FS Etalon 1000um thick

Part Number: OP-3644-1000
Details: 5mmx5mm, 1mm thick, FSR ~100GHz, uncoated, finesse = 0.6

$200

5x5mm Solid FS Etalon 2000um thick

Part Number: OP-3644-2000
Details: 5mmx5mm, 2mm thick, FSR ~50GHz, uncoated, finesse = 0.6

$200

5x5mm Solid FS Etalon 3000um thick

Part Number: OP-3644-3000
Details: 5mmx5mm, 3mm thick, FSR ~33GHz, uncoated, finesse = 0.6

$200

5x5mm Solid FS Etalon 5000um thick

Part Number: OP-3644-5000
Details: 5mmx5mm, 5mm thick, FSR ~20GHz, uncoated, finesse = 0.6

$70

5x5mm Etalon Mount

Part Number: OP-4397-5
Details: 1" diameter mount designed to hold 5mm x 5mm etalon.  Price includes the cementing of the etalon to the mount at LightMachinery.

SOLID FUSED SILICA ETALONS FINESSE 6
$570

Solid Fused Silica Etalon, FSR= 2/cm, finesse =6

Part Number: OP-1853-1686
Details: 1.68mm thick,  1" diameter, nominal finesse = 6, 450 to 650nm, clear aperture 85%,

$570

Solid Fused Silica Etalon FSR= 1/cm, finesse = 6

Part Number: OP-1853-3371
Details: 3.37mm thick, 1" diameter, nominal finesse = 6, 450 to 650nm, clear aperture 85%

$570

Solid Fused Silica Etalon FSR= 0.5/cm, finesse = 6

Part Number: OP-1853-6743
Details: 6.74mm thick, 1" diameter, nominal finesse = 6, 450 to 650nm, clear aperture 85%

SOLID FUSED SILICA ETALONS FINESSE 30, 530NM TO 660NM
$950

Solid Fused Silica Etalon, FSR = 2/cm, Finesse >30, 530nm to 660nm

Part Number: OP-7423-1686-1
Details: 1" diameter, clear aperture 20mm, FSR = 2/cm (thickness 1.686mm), Finesse 30 min. (35 typical)

$835

Solid Fused Silica Etalon, FSR = 1/cm, Finesse >30, 530 to 660nm

Part Number: OP-7423-3371-1
Details: 1" diameter, clear aperture 20mm, FSR = 1/cm (thickness 3.371mm), Finesse 30 (35 typical)

$835

Solid Fused Silica Etalon, FSR=0.5/cm, Finesse >30, 530nm to 660nm

Part Number: OP-7423-6743-1
Details: 1" diameter, clear aperture 20mm, FSR = 0.5/cm (thickness 6.743mm), Finesse 30 min. (35 typical)

SOLID FUSED SILICA ETALONS FINESSE 30, 700NM TO 850NM
$950

Solid Fused Silica Etalon, FSR = 2/cm, Finesse 30, 700nm to 850nm

Part Number: OP-7423-1686-2
Details: 1" diameter, clear aperture 20mm, FSR = 2/cm (thickness 1.686mm), Finesse 30 min. (40 typical)

$835

Solid Fused Silica Etalon, FSR = 1/cm, Finesse 30, 700nm to 850nm

Part Number: OP-7423-3371-2
Details: 1" diameter, clear aperture 20mm, FSR = 1/cm (thickness 3.371mm), Finesse 30 min. (40 typical)

$835

Solid Fused Silica Etalon, FSR = 0.5/cm, Finesse 30 700nm to 850nm

Part Number: OP-7423-6743-2
Details: 1" diameter, clear aperture 20mm, FSR = 0.5/cm (thickness 6.743mm), Finesse 30 min. (40 typical)

SOLID FUSED SILICA ETALONS FINESSE 30, 850NM TO 1100NM
$950

Solid Fused Silica Etalon, FSR = 2/cm, Finesse 30, 850nm to 1100nm

Part Number: OP-7423-1686-3
Details: 1" diameter, clear aperture 20mm, FSR = 2/cm (thickness 1.686mm), Finesse 30 min. (43 typical)

$835

Solid Fused Silica Etalon, FSR = 1/cm, Finesse 30, 850nm to 1100nm

Part Number: OP-7423-3371-3
Details: 1" diameter, clear aperture 20mm, FSR = 1/cm (thickness 3.371mm), Finesse 30 min. (43 typical)

$835

Solid Fused Silica Etalon, FSR = 0.5/cm, Finesse 30, 850nm to 1100nm

Part Number: OP-7423-6743-3
Details: 1" diameter, clear aperture 20mm, FSR = 0.5/cm (thickness 6.743mm), Finesse 30 min. (43 typical)

SOLID FUSED SILICA ETALONS FINESSE 30, 1450NM TO 1700NM
$950

Solid Fused Silica Etalon, FSR = 2/cm, Finesse 30, 1450nm to 1700nm

Part Number: OP-7423-1686-4
Details: 1" diameter, clear aperture 20mm, FSR = 2/cm (thickness 1.686mm), Finesse 30 min. (47 typical)

$835

Solid Fused Silica Etalon, FSR = 1/cm, Finesse 30, 1450nm to 1700nm

Part Number: OP-7423-3371-4
Details: 1" diameter, clear aperture 20mm, FSR = 1/cm (thickness 3.371mm), Finesse 30 min. (47 typical)

$835

Solid Fused Silica Etalon, FSR = 0.5/cm, Finesse 30 1450nm to 1700nm

Part Number: OP-7423-6743-4
Details: 1" diameter, clear aperture 20mm, FSR = 0.5/cm (thickness 6.743mm), Finesse 30 min. (47 typical)

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