Reflection Gratings

Replicated Ruled Diffraction Gratings

Standard replicated diffraction gratings are produced from ruled and holographic originals and are intended for use in moderate resolution spectrophotometers, spectrometers and monochromators where low cost, high efficiency and low stray light are of primary concern. Since standard diffraction gratings are cut from larger replicas, they are ruled over their entire surface. Incident radiation should, however, be restricted to 90% of the ruled area.

 

Standard Series Replicated Ruled Diffraction Gratings
Grooves
/ MM
Blaze λ
(nm)
Blaze
Angle
Dispersion
(nm/mr)
120
12000
46 3'
5.8
150
500
2 8'
6.66
300
300
2 34'
3.33
300
500
4 18'
3.32
300
1000
8 36'
3.30
300
2000
17 27'
3.18
300
4000
36 52'
2.67
600
300
5 9'
1.66
600
400
6 53'
1.66
600
500
8 37'
1.65
600
750
13 0'
1.62
600
1000
17 27'
1.59
600
1250
22 1'
1.55
600
1600
28 41'
1.46
830
800
19 23'
1.14
830
1200
29 52'
1.05
900
500
13 0'
1.08
1200
250
8 37'
0.82
1200
300
10 22'
0.82
1200
400
13 53'
0.81
1200
500
17 27'
0.80
1200
750
26 44'
0.74
1200
1000
36 52'
0.67
1800
240
12 29'
0.54
1800
500
26 44'
0.50
Standard Series Replicated Ruled Diffraction Gratings
Grooves
/ MM
Blaze λ
(nm)
12.7x12.7
x 6
25x25
x 6
25x25
x 9.5
30x30
x 9.5
50x50
x 9.5
12.5x25
x 6
12.5x25
x 9.5
25x50
x 9.5
Eff
Curve
120
12000
3-4112
3-8112
3-2112
3-3112
3-5112
3-6112
3-1112
3-7112
150
500
3-4155
3-8155
3-2155
3-3155
3-5155
3-6155
3-1155
3-7155
300
300
3-4330
3-8330
3-2330
3-3330
3-5330
3-6330
3-1330
3-7330
300
500
3-4350
3-8350
3-2350
3-3350
3-5350
3-6350
3-1350
3-7350
300
1000
3-4310
3-8310
3-2310
3-3310
3-5310
3-6310
3-1310
3-7310
300
2000
3-4320
3-8320
3-2320
3-3320
3-5320
3-6320
3-1320
3-7320
300
4000
3-4340
3-8340
3-2340
3-3340
3-5340
3-6340
3-1340
3-7340
600
300
3-4630
3-8630
3-2630
3-3630
3-5630
3-6630
3-1630
3-7630
600
400
3-4640
3-8640
3-2640
3-3640
3-5640
3-6640
3-1640
3-7640
600
500
3-4650
3-8650
3-2650
3-3650
3-5650
3-6650
3-1650
3-7650
600
750
3-4675
3-8675
3-2675
3-3675
3-5675
3-6675
3-1675
3-7675
600
1000
3-4610
3-8610
3-2610
3-3610
3-5610
3-6610
3-1610
3-7610
600
1250
3-4612
3-8612
3-2612
3-3612
3-5612
3-6612
3-1612
3-7612
600
1600
3-4616
3-8616
3-2616
3-3616
3-5616
3-6616
3-1616
3-7616
830
800
3-4880
3-8880
3-2880
3-3880
3-5880
3-6880
3-1880
3-7880
830
1200
3-4812
3-8812
3-2812
3-3812
3-5812
3-6812
3-1812
3-7812
900
500
3-4712
3-8712
3-2712
3-3712
3-5712
3-6712
3-1712
3-7712
1200
250
3-4125
3-8125
3-2125
3-3125
3-5125
3-6125
3-1125
3-7125
1200
300
3-4130
3-8130
3-2130
3-3130
3-5130
3-6130
3-1130
3-7130
1200
400
3-4140
3-8140
3-2140
3-3140
3-5140
3-6140
3-1140
3-7140
1200
500
3-4150
3-8150
3-2150
3-3150
3-5150
3-6150
3-1150
3-7150
1200
750
3-4175
3-8175
3-2175
3-3175
3-5175
3-6175
3-1175
3-7175
1200
1000
3-4110
3-8110
3-2110
3-3110
3-5110
3-6110
3-1110
3-7110
1800
240
3-4162
3-8162
3-2162
3-3162
3-5162
3-6162
3-1162
3-7162
1800
500
3-4185
3-8185
3-2185
3-3185
3-5185
3-6185
3-1185
3-7185
PRICE ($) *
50.00
85.00
85.00
95.00
150.00
65.00
65.00
109.00
 

* Prices are in USD and are list prices only.

Thermally Stable Ruled Diffraction Gratings

Replicating master gratings on Pyrex®, produces diffraction gratings with flatness, λ/4 or better, good thermal stability and resolution equal to 80-90% of the master. Thermally stable diffraction gratings are available in groove spacings from 120 to 1800 g/mm, blazed from 240 nm to 12.0μ. These diffraction gratings are also available replicated on Zerodur®.
Thermally Stable Ruled Diffraction Gratings
Grooves
/ MM
Blaze λ
(nm)
Blaze
Angle
Dispersion
(nm/mr)
120
12000
46 3'
5.78
150
500
2 8'
6.66
300
300
2 34'
3.33
300
500
4 18'
3.32
300
1000
8 36'
3.30
300
2000
17 27'
3.18
300
4000
36 52'
2.67
600
300
5 9'
1.66
600
400
6 53'
1.66
600
500
8 37'
1.65
600
750
13 0'
1.62
600
1000
17 27'
1.59
600
1250
22 1'
1.55
600
1600
28 41'
1.46
830
800
19 23'
1.14
830
1200
29 52'
1.05
900
500
13 0'
1.08
1200
250
8 37'
0.82
1200
300
10 22'
0.82
1200
400
13 53'
0.81
1200
500
17 27'
0.80
1200
750
26 44'
0.74
1200
1000
36 52'
0.67
1800
240
12 29'
0.54
1800
500
26 44'
0.50

 
Thermally Stable Ruled Diffraction Gratings
Grooves
/ MM
Blaze λ
(nm)
12.7x12.7
x 6
25x25
x 6
25x25
x 9.5
30x30
x 9.5
50x50
x 9.5
12.5x25
x 6
12.5x25
x 9.5
25x50
x 9.5
Eff
Curve
120
12000
3-4219
3-8219
3-2219
3-3219
3-5219
3-6219
3-1219
3-7219
150
500
3-4559
3-8559
3-2559
3-3559
3-5559
3-6559
3-1559
3-7559
300
300
3-4339
3-8339
3-2339
3-3339
3-5339
3-6339
3-1339
3-7339
300
500
3-4359
3-8359
3-2359
3-3359
3-5359
3-6359
3-1359
3-7359
300
1000
3-4229
3-8229
3-2229
3-3229
3-5229
3-6229
3-1229
3-7229
300
2000
3-4329
3-8329
3-2329
3-3329
3-5329
3-6329
3-1329
3-7329
300
4000
3-4349
3-8349
3-2349
3-3349
3-5349
3-6349
3-1349
3-7349
600
300
3-4639
3-8639
3-2639
3-3639
3-5639
3-6639
3-1639
3-7639
600
400
3-4649
3-8649
3-2649
3-3649
3-5649
3-6649
3-1649
3-7649
600
500
3-4659
3-8659
3-2659
3-3659
3-5659
3-6659
3-1659
3-7659
600
750
3-4679
3-8679
3-2679
3-3679
3-5679
3-6679
3-1679
3-7679
600
1000
3-4619
3-8619
3-2619
3-3619
3-5619
3-6619
3-1619
3-7619
600
1250
3-4609
3-8609
3-2609
3-3609
3-5609
3-6609
3-1609
3-7609
600
1600
3-4669
3-8669
3-2669
3-3669
3-5669
3-6669
3-1669
3-7669
830
800
3-4889
3-8889
3-2889
3-3889
3-5889
3-6889
3-1889
3-7889
830
1200
3-4819
3-8819
3-2819
3-3819
3-5819
3-6819
3-1819
3-7819
900
500
3-4719
3-8719
3-2719
3-3719
3-5719
3-6719
3-1719
3-7719
1200
250
3-4129
3-8129
3-2129
3-3129
3-5129
3-6129
3-1129
3-7129
1200
300
3-4139
3-8139
3-2139
3-3139
3-5139
3-6139
3-1139
3-7139
1200
400
3-4149
3-8149
3-2149
3-3149
3-5149
3-6149
3-1149
3-7149
1200
500
3-4159
3-8159
3-2159
3-3159
3-5159
3-6159
3-1159
3-7159
1200
750
3-4179
3-8179
3-2179
3-3179
3-5179
3-6179
3-1179
3-7179
1200
1000
3-4119
3-8119
3-2119
3-3119
3-5119
3-6119
3-1119
3-7119
1800
240
3-4169
3-8169
3-2169
3-3169
3-5169
3-6169
3-1169
3-7169
1800
500
3-4189
3-8189
3-2189
3-3189
3-5189
3-6189
3-1189
3-7189
PRICE ($) *
55.00
99.00
99.00
105.00
159.00
69.00
69.00
129.00
 
* Prices are in USD and are list prices only.
(All dimensions in millimeters)
Coatings
Protective overcoatings that maintain or enhance reflectivity in the UV, Visible and IR regions are available for an additional charge.
Gold Overcoat (AU-3) $60.00 each
Aluminum Magnesium Fluoride (ALMG-3) $55.00 each
Efficiency Curve Key
  • All gratings are measured in the Littrow mounting in
  • All gratings utilize an aluminum (AI) reflective coat

Replicated Holographic Diffraction Gratings

Standard replicated diffraction gratings are produced from ruled and holographic originals and are intended for use in moderate resolution spectrophotometers, spectrometers and monochromators where low cost, high efficiency and low stray light are of primary concern. Since standard diffraction gratings are cut from larger replicas, they are ruled over their entire surface. Incident radiation should, however, be restricted to 90% of the ruled area.

Standard Series Replicated Holographic Diffraction Gratings
Grooves
/ MM
Optimum
Efficiency
Dispersion
(nm/mr)
600
UV
1.67 @ 250 NM
1000
UV
0.99 @ 250 NM
1200
UV
0.82 @ 250 NM
1200
VIS
0.79 @ 250 NM
1800
UV
0.54 @ 250 NM
1800
VIS
0.50 @ 250 NM
2400
UV
0.40 @ 250 NM
2400
VIS
0.33 @ 250 NM
3600
UV
0.25 @ 250 NM

 

Standard Series Replicated Holographic Diffraction Gratings
Grooves
/ MM
Optimum
Efficiency
Dispersion
(nm/mr)
12.7x12.7
x 6
25x25
x 6
25x25
x 9.5
30x30
x 9.5
50x50
x 9.5
12.5x25
x 6
12.5x25
x 9.5
25x50
x 9.5
Eff
Curve
600
UV
1.67 @ 250 NM
3-4021
3-8021
3-2021
3-3021
3-5021
3-6021
3-1021
3-7021
1000
UV
0.99 @ 250 NM
3-4061
3-8061
3-2061
3-3061
3-5061
3-6061
3-1061
3-7061
1200
UV
0.82 @ 250 NM
3-4121
3-8121
3-2121
3-3121
3-5121
3-6121
3-1121
3-7121
1200
VIS
0.79 @ 500 NM
3-4122
3-8122
3-2122
3-3122
3-5122
3-6122
3-1122
3-7122
1800
UV
0.54 @ 250 NM
3-4181
3-8181
3-2181
3-3181
3-5181
3-6181
3-1181
3-7181
1800
VIS
0.50 @ 500 NM
3-4182
3-8182
3-2182
3-3182
3-5182
3-6182
3-1182
3-7182
2400
UV
0.40 @ 250 NM
3-4241
3-8241
3-2241
3-3241
3-5241
3-6241
3-1241
3-7241
2400
VIS
0.33 @ 500 NM
3-4242
3-8242
3-2242
3-3242
3-5242
3-6242
3-1242
3-7252
3600
UV
0.25 @ 250 NM
3-4361
3-8361
3-2361
3-3361
3-5361
3-6361
3-1361
3-7361
PRICE ($) *
59.00
105.00
105.00
135.00
229.00
75.00
75.00
129.00
 
* Prices are in USD and are list prices only.
(All dimensions in millimeters)
 
Coatings
Protective overcoatings that maintain or enhance reflectivity in the UV, Visible and IR regions are available for an additional charge.
Gold Overcoat (AU-3) $60.00 each
Aluminum Magnesium Fluoride (ALMG-3) $55.00 each
Efficiency Curve Key
  • All gratings are measured in the Littrow mounting in
  • All gratings utilize an aluminum (AI) reflective coat

Thermally Stable Holographic Diffraction Gratings

Replicating master gratings on Pyrex®, produces diffraction gratings with flatness, λ/4 or better, good thermal stability and resolution equal to 80-90% of the master. Thermally stable diffraction gratings are available in groove spacings from 120 to 1800 g/mm, blazed from 240 nm to 12.0μ. These gratings are also available replicated on Zerodur®.

Thermally Stable Holographic Diffraction Gratings
Grooves
/ MM
Optimum
Efficiency
Dispersion
(nm/mr)
12.7x12.7
x 6
25x25
x 6
25x25
x 9.5
30x30
x 9.5
50x50
x 9.5
12.5x25
x 6
12.5x25
x 9.5
25x50
x 9.5
Eff
Curve
600
UV
1.67 @ 250 NM
3-4027
3-8027
3-2027
3-3027
3-5027
3-6027
3-1027
3-7027
1000
UV
0.99 @ 250 NM
3-4067
3-8067
3-2067
3-3067
3-5067
3-6067
3-1067
3-7067
1200
UV
0.82 @ 250 NM
3-4127
3-8127
3-2127
3-3127
3-5127
3-6127
3-1127
3-7127
1200
VIS
0.79 @ 500 NM
3-4128
3-8128
3-2128
3-3128
3-5128
3-6128
3-1128
3-7128
1800
UV
0.54 @ 250 NM
3-4187
3-8187
3-2187
3-3187
3-5187
3-6187
3-1187
3-7187
1800
VIS
0.50 @ 500 NM
3-4188
3-8188
3-2188
3-3188
3-5188
3-6188
3-1188
3-7188
2400
UV
0.40 @ 250 NM
3-4247
3-8247
3-2247
3-3247
3-5247
3-6247
3-1247
3-7247
2400
VIS
0.33 @ 500 NM
3-4248
3-8248
3-2248
3-3248
3-5248
3-6248
3-1248
3-7258
3600
UV
0.25 @ 250 NM
3-4367
3-8367
3-2367
3-3367
3-5367
3-6367
3-1367
3-7367
PRICE ($) *
65.00
115.00
115.00
145.00
239.00
79.00
79.00
149.00
 
* Prices are in USD and are list prices only.
(All dimensions in millimeters)
Efficiency Curve Key
  • All gratings are measured in the Littrow mounting in
  • All gratings utilize an aluminum (AI) reflective coat

Spectroscopic Diffraction Grating Kits

These spectroscopic diffraction grating kits, covering the UV to the near IR, each contain four (4) diffraction gratings, covering the 250nm to 1.2 μ wavelength range. Choose either a 600 groove per mm or a 1200 groove per mm kit in a choice of two sizes.
 
Kit Comprised of 1 each of
Grooves per mm/Blaze Wavelength
12.7mm
25mm
Eff Curve
600/300mm
3-4630
3-2630
600/500mm
3-4650
3-2650
600/750mm
3-4675
3-2675
600/1.0 micron (1,000mm)
3-4610
3-2610
Kit Price
$169.00
$279.00
 
Kit Catalog No.
3-0101
3-0102
 

 
 
Kit Comprised of 1 each of
Grooves per mm/Blaze Wavelength
12.7mm
25mm
Eff Curve
1200/300nm
3-4130
3-2130
1200/500nm
3-4150
3-2150
1200/750nm
3-4175
3-2175
1200/1000nm (1.0μ)
3-4110
3-2110
Kit Price
$169.00
$279.00
 
Kit Catalog No.
3-0201
3-0202
 

 
General Specifications
Material
-
BK7 or float glass or equivalent
Size
-
12.7 mm square or 25mm square
Thickness
-
6mm - 9.5mm
Dimensional tolerances
-
± 0.5 mm
Efficiency
-
60-80% at blaze wavelength

 

Custom

Optometrics operates several modern master diffraction grating production laboratories, producing both interferometrically controlled classically ruled and holographically recorded replication masters to optimize its OEM customers’ instrument performance. Hundreds of standard replication masters are inventoried for fast delivery of many common designs. Optometrics also supports new OEM customers in need of regenerating less efficient grating replication masters, resulting in improved quality, manufacturing efficiencies, and lower costs. Many OEM’s further benefit from Optometrics’ related products, pre-aligned spectrometer sub-assemblies and precision optical replication expertise for critical mirror surfaces.

 

Optometrics’ core technologies of mechanical ruling, holographic recording, photolithography and optical thin film coatings have also positioned the company as a leading supplier of patterned optical coatings, polka-dot beamsplitters, wire grid polarizers, and specialty mirrors.

Optometrics offers its OEM customers additional services:

  • Kanban stocking arrangements
  • Bar coding capabilities
  • Specialized packaging services
  • Customer names coded for confidentiality
  • Higher level pre-aligned optical assemblies

The company is also proud of its ability to support customers in all phases of the product development cycle.

 

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