Diffraction GratingsLo-Ray-Ligh®

Lo-Ray-Ligh

Features

Schematic of Shimadzu Laser Stray Light Measuring System
Schematic of Shimadzu laser stray-light measuring apparatus
Schematic of Light Intensity in Vicinity of First-Order Light Measuring System
Stray light values

 

Standard List

Code Number Groove Density
(grooves/mm)
Blaze Wavelength
(nm)*1
Stray Light
Values *2
DimensionsW x H x T
(mm)
LS120-025-3010 1200 250 2 x 10-6(max.) 30 x 30 x 10
LS120-025-6010 1200 250 2 x 10-6(max.) 60 x 60 x 10
LS120-050-3010 1200 500 2 x 10-6(max.) 30 x 30 x 10
LS120-050-6010 1200 500 2 x 10-6(max.) 60 x 60 x 10
LS120-060-3010 1200 600 2 x 10-6(max.) 30 x 30 x 10
LS120-060-6010 1200 600 2 x 10-6(max.) 60 x 60 x 10
LS180-025-3010 1800 250 2 x 10-6(max.) 30 x 30 x 10
LS180-025-6010 1800 250 2 x 10-6(max.) 60 x 60 x 10
LS180-050-3010 1800 500 2 x 10-6(max.) 30 x 30 x 10
LS180-050-6010 1800 500 2 x 10-6(max.) 60 x 60 x 10

 

Standard Specifications

Grating Type Equally spaced straight-groove replica grating(*3)
Blank Material Soda glass
External Dimension Tolerance ±0.1(W) x ±0.1(H) (mm)
Thickness Tolerance ±0.5(T) (mm)
Effective Area Total area less a 2-mm strip around the perimeter
Groove Density Tolerance ±0.5 grooves/mm
Diffraction Wavefront Accuracy Within 2λ(+1st-order light, λ = 632.8nm)
Coating Aluminum (Al)
Scratches and Digs 80-50 (In accordance with MIL-O-13830A)

 

Outline Drawing of Diffraction Grating

Outline Drawing of Diffraction Grating
  • *1 The blaze wavelengths is the wavelength of the maximum diffraction efficiency with the design in littrow mounting. No one to guarantee the wavelength of the maximum diffraction efficiency.
  • *2 These indicate the ratio of the diffracted light intensity to the incident intensity of 473nm laser. The diffracted light is detected of mid-point between zero- and first-order light at the deviation angle 2K of 27 degree.
  • *3 The grating grooves are formed with resign.