LightSmyth Technologies - Crafting Light for Industry and Science

Products:

Nanopatterned Diffraction Gratings

Traditional straight-line, constant pitch diffraction gratings

LightSmyth Technologies' family of straight-line constant pitch binary diffraction gratings is fabricated in silicon by deep-ultraviolet photolithography and subsequent etch – the workhorse fabrication tools of the semiconductor industry.

The high fidelity fabrication tools employed provide high spatial coherence and minimize stray light – LightSmyth lithographically fabricated diffraction gratings exhibit scatterd light levels lower by up to two orders or magnitude than traditional holographic and ruled gratings. Groove depth and duty cycle are optimized to minimize undesirable higher-order diffraction. Each grating is a master, free from replication flaws. Grating surfaces are cleanable and abrasion-resistant. Silicon substrates provide thermal conductivity approaching that of copper and thermal expansion lower than Pyrex making it an ideal general substrate material and in a class by itself in high temperature or power applications. Sub-millimeter substrate thicknesses make these gratings ultra-light and enable device miniaturization.

For additional technical information click here.

List of Standard Gratings

Typical grating thickness is approximately 0.73 mm. Substrate height and width tolerance is ± 0.3 mm. Grating substrate: Silicon. In the part number, X refers to the exterior grating surface and X=Si, Al, AlM, AlO, and Au represent, respectively, bare silicon, Aluminum, Aluminum + MgF2 protective layer, Aluminum + Al2O3 protective layer, and gold. Please inquire about the availability of coated gratings before ordering. Note that coating requests necessitating a non-scheduled coating run may involve additional cost.

Line Density
(lines/mm)		 Etch Depth Size Part number*
7200 65 nm 12.5 mm × 12.5 mm SLG-C72-1212A-X
7200 55 nm 12.5 mm × 12.5 mm SLG-C72-1212B-X
7200 45 nm 12.5 mm × 12.5 mm SLG-C72-1212C-X
7200 65 nm 25 mm × 25 mm SLG-C72-2525A-X
7200 55 nm 25 mm × 25 mm SLG-C72-2525B-X
7200 45 nm 25 mm × 25 mm SLG-C72-2525C-X
3600 110 nm 12.5 mm × 12.5 mm SLG-C36-1212A-X
2400 110 nm 12.5 mm × 12.5 mm SLG-C24-1212A-X
1200 200 nm 12.5 mm × 12.5 mm SLG-C12-1212A-X
1200 200 nm 25 mm × 25 mm SLG-C12-2525A-X
1200 200 nm 50 mm × 30 mm SLG-C12-5050A-X

*The symbol X at the end of the part number specifies surface type and must be replaced with the appropriate designation (see above).

Pricing Information ** (1200-3600 lines/mm)

Quantity Price
12.5 mm × 12.5 mm 25 mm × 25 mm 50 mm × 30 mm
1 $119 $259 $569
2 - 5 $108 $235 $517
6 – 10 $99 $215 $473
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Pricing Information ** (7200 lines/mm)

Quantity Price
12.5 mm × 12.5 mm 25 mm × 25 mm
1 $400 $595
2 - 5 $375 $559
6 – 10 $359 $534
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**Academic discounts are available for eligible institutions. To determine eligibility complete an account application procedure.

Custom Straight-Line Silicon Diffraction Gratings

LightSmyth offers custom linear-groove gratings with the following attributes:

  • Al, Al+MgF2, Al+Al2O3 gold or silver coatings
  • up to 12-inch diameter substrates
  • up to 7000 lines/mm line density
  • variable duty cycle
  • line widths as thin as 100 nm
  • groove depths up to 400 nm.

Our optical engineers will gladly assist with your custom application.