Build to Order Plane Ruled Diffraction Gratings

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Master Grating Options

Plane ruled gratings are listed in order of groove frequency, with the lowest blaze angle listed first. Blaze wavelengths listed are for the first-order Littrow configuration. The maximum ruled area is groove length x ruled width. Click on a Master Grating Code (last 4 digits of a grating's part number) below to view master grating efficiency curves. Use the request a quote to get a quote based on your requirements. For additional diffraction grating options and custom capabilities, please see the Features section.

Master Grating Code	Grooves per mm	Nominal Blaze Wavelength (1^st Order Littrow, nm)	Nominal Blaze Angle	Maximum Ruled Area (Groove Length x Ruled Width, mm)	Standard Parts Availability	Overstock Availability	Request a Quote
006R	5880	138	24°	30.5 x 45		Yes	Quote
911R	4968	131	19°	90 x 140		Yes	Quote
115R	3600	104	10.8°	52 x 52		Yes	Quote
160R	3600	130	13.5°	102 x 102		Yes	Quote
170R	3600	240	25.6°	64 x 64		Yes	Quote
021R	2700	259	20°	102 x 34		Yes	Quote
196R	2400	29	2°	26 x 26			Quote
190R	2400	150	10.4°	102 x 102		Yes	Quote
150R	2400	240	16.8°	102 x 102		Yes	Quote
240R	2400	300	21°	102 x 102		Yes	Quote
151R	2200	226.2	14.5°	54 x 54		Yes	Quote
102R	2160	173	10.8°	64 x 64		Yes	Quote
140R	2160	200	12.5°	102 x 102			Quote
040R	2160	300	19°	102 x 128		Yes	Quote
300R	2160	500	32.7°	128 x 154		Yes	Quote
195R	1800	180	9.3°	52 x 52		Yes	Quote
061R	1800	250	13°	52 x 52	Yes	Yes	Quote
289R	1800	400	21.1°	102 x 102		Yes	Quote
290R	1800	500	26.7°	102 x 102	Yes	Yes	Quote
128R	1714.3	650	34°	102 x 102		Yes	Quote
285R	1700	530	22.49°	102 x 102		Yes	Quote
164R	1649.5	375	18°	102 x 102			Quote
118R	1600	200	9.2°	102 x 30		Yes	Quote
070R	1500	250	10.8°	52 x 52		Yes	Quote
176R	1350	675	27.1°	75 x 96		Yes	Quote
188R	1201.6	250	8.6°	102 x 102		Yes	Quote
101R	1200	29	1°	50 x 52			Quote
034R	1200	43	1.48°	30 x 50			Quote
130R	1200	120	4.1°	65 x 76		Yes	Quote
120R	1200	150	5.2°	154 x 206		Yes	Quote
020R	1200	200	7°	154 x 206		Yes	Quote
060R	1200	250	8.6°	154 x 206	Yes	Yes	Quote
030R	1200	300	10.4°	154 x 206		Yes	Quote
330R	1200	400	14°	102 x 128	Yes	Yes	Quote
254R	1200	450	15.7°	155 x 208			Quote
047R	1200	450	15.7°	102 x 102		Yes	Quote
280R	1200	500	17.5°	154 x 206	Yes	Yes	Quote
340R	1200	600	21°	204 x 306		Yes	Quote
360R	1200	750	26.7°	154 x 206	Yes	Yes	Quote
361R	1200	850	30.7°	102 x 102		Yes	Quote
067R	1200	900	32.7°	154 x 206		Yes	Quote
530R	1200	1000	36.8°	154 x 206	Yes	Yes	Quote
531R	1200	1100	41.3°	156 x 206			Quote
546R	1200	1100	41.3°	70 x 79			Quote
540R	1200	1200	46°	154 x 206		Yes	Quote
105R	1000	250	7.2°	102 x 102		Yes	Quote
701R	1000	900	26.7°	102 x 102		Yes	Quote
148R	1000	1310	41°	102 x 102		Yes	Quote
721R	984.6	140	3.9°	52 x 52			Quote
462R	964	520	14.6°	64 x 64		Yes	Quote
266R	900	550	14.3°	154 x 206	Yes	Yes	Quote
155R	900	1300	35.8°	102 x 102		Yes	Quote
369R	830.77	900	19.7°	156 x 206		Yes	Quote
035R	830	900	21.4°	64 x 64		Yes	Quote
525R	830	1200	30°	154 x 206		Yes	Quote
274R	822.58	450	10.7°	51 x 104		Yes	Quote
259R	768	425	9.4°	102 x 104			Quote
252R	760	1050	23.5°	102 x 102			Quote
111R	720	2000	43.1°	156 x 206		Yes	Quote
051R	716.42	222	4.7°	52 x 52		Yes	Quote
455R	700	530	10.5°	104 x 102		Yes	Quote
727R	672	832	16.1°	64 x 64		Yes	Quote
715R	664.3	2600	68.44°	64 x 64		Yes	Quote
720R	625	2800	61.2°	30 x 32		Yes	Quote
100R	600	120	2°	102 x 102		Yes	Quote
110R	600	150	2.6°	102 x 102		Yes	Quote
050R	600	250	4.3°	102 x 128	Yes	Yes	Quote
010R	600	300	5.2°	154 x 206	Yes	Yes	Quote
080R	600	400	7°	154 x 206	Yes	Yes	Quote
260R	600	500	8.6°	154 x 206	Yes	Yes	Quote
267R	600	650	11.3°	154 x 206		Yes	Quote
350R	600	750	13°	154 x 206	Yes	Yes	Quote
351R	600	800	13.9°	154 x 206		Yes	Quote
520R	600	1000	17.5°	154 x 206	Yes	Yes	Quote
560R	600	1200	22°	154 x 206	Yes	Yes	Quote
550R	600	1600	28.7°	154 x 206	Yes	Yes	Quote
660R	600	1850	34°	154 x 206		Yes	Quote
132R	600	1900	34°	102 x 102		Yes	Quote
024R	600	2160	40.4°	102 x 102		Yes	Quote
258R	600	2250	42.5°	154 x 208			Quote
570R	600	2500	49°	154 x 206			Quote
466R	600	2700	54°	102 x 102		Yes	Quote
564R	590	240	4°	102 x 102			Quote
264R	588	561	9.5°	52 x 52			Quote
236R	534	2750	46.9°	35 x 45			Quote
069R	500	240	3.4°	102 x 102		Yes	Quote
230R	500	330	4.7°	102 x 102		Yes	Quote
246R	500	560	8°	154 x 206		Yes	Quote
396R	500	770	11.1°	102 x 102		Yes	Quote
055R	500	1370	20°	154 x 206		Yes	Quote
231R	497	2250	34°	102 x 102			Quote
341R	490.4	750	10.6°	64 x 64		Yes	Quote
284R	480	500	6.89°	156 x 212			Quote
194R	450	1800	23.9°	102 x 102		Yes	Quote
168R	425.8	1850	23.2°	128 x 102			Quote
074R	424.2	2000	24°	104 x 102			Quote
676R	420	2150	26.7°	52 x 52			Quote
183R	400	250	2.9°	104 x 102		Yes	Quote
586R	400	400	4.5°	154 x 206		Yes	Quote
581R	400	550	6.3°	102 x 128		Yes	Quote
580R	400	850	9.7°	154 x 206		Yes	Quote
590R	400	1200	13.9°	154 x 206		Yes	Quote
600R	400	1300	15°	102 x 128		Yes	Quote
650R	400	1600	18.6°	154 x 206		Yes	Quote
162R	400	2100	24.8°	102 x 102		Yes	Quote
223R	384.6	520	5.7°	102 x 102		Yes	Quote
222R	384.6	605	6.7°	102 x 102		Yes	Quote
167R	361.2	2350	25.1°	130 x 102		Yes	Quote
496R	360	1000	10.4°	128 x 152		Yes	Quote
391R	360	1740	18.2°	64 x 64			Quote
775R	360	2000	21°	102 x 102		Yes	Quote
777R	360	2900	31.3°	64 x 64			Quote
778R	360	3700	42°	64 x 64		Yes	Quote
243R	345	3600	38.4°	102 x 102			Quote
321R	333	600	5.7°	64 x 64		Yes	Quote
172R	300	280	2.4°	104 x 102		Yes	Quote
090R	300	300	2.5°	154 x 206	Yes	Yes	Quote
327R	300	325	2.8°	102 x 102		Yes	Quote
091R	300	422	3.6°	154 x 206		Yes	Quote
270R	300	500	4.3°	154 x 206	Yes	Yes	Quote
204R	300	550	4.7°	102 x 102		Yes	Quote
180R	300	760	6.5°	102 x 128		Yes	Quote
220R	300	860	7.4°	102 x 102		Yes	Quote
510R	300	1000	8.6°	204 x 306		Yes	Quote
640R	300	1200	10.4°	102 x 102		Yes	Quote
806R	300	1700	14.6°	102 x 128		Yes	Quote
770R	300	2000	17.5°	154 x 206		Yes	Quote
736R	300	2500	22°	102 x 102		Yes	Quote
039R	300	2670	23°	102 x 102			Quote
780R	300	3000	26.7°	154 x 206		Yes	Quote
800R	300	3500	31.6°	102 x 128		Yes	Quote
440R	300	4300	36.8°	154 x 206		Yes	Quote
013R	300	4800	46°	102 x 102		Yes	Quote
641R	293.53	1300	11.4°	64 x 64		Yes	Quote
166R	287.3	3300	28.1°	155 x 208			Quote
801R	287.2	1900	16.2°	64 x 64		Yes	Quote
154R	286.52	5000	46°	102 x 102		Yes	Quote
803R	285	3800	33.1°	102 x 102			Quote
169R	272.3	1900	15°	154 x 206		Yes	Quote
283R	265	1555	11.9°	102 x 102			Quote
286R	265	1600	12.2°	102 x 102			Quote
431R	260	2700	20.5°	64 x 64			Quote
126R	258	315	2.4°	64 x 76		Yes	Quote
125R	250	1000	7.2°	64 x 64		Yes	Quote
203R	246.16	226	1.6°	52 x 52			Quote
179R	245	4850	36.5°	158 x 208			Quote
107R	245	5000	38°	154 x 206		Yes	Quote
820R	240	3750	26.7°	90 x 102		Yes	Quote
825R	240	4650	34°	64 x 64		Yes	Quote
791R	236.8	1350	9.2°	52 x 52		Yes	Quote
789R	235.8	1310	9.25°	64 x 64		Yes	Quote
790R	235	750	5.06°	64 x 64		Yes	Quote
796R	235	870	5.9°	65 x 76			Quote
217R	223	2450	15.9°	212 x 410		Yes	Quote
001R	220	2700	17.5°	102 x 128			Quote
165R	219	4400	28.5°	129 x 104		Yes	Quote
866R	210	4300	26.7°	102 x 102			Quote
877R	210	5000	31.7°	154 x 190		Yes	Quote
346R	200	730	4.2°	102 x 102		Yes	Quote
596R	200	1050	6°	102 x 102		Yes	Quote
633R	200	1550	8.95°	154 x 198		Yes	Quote
630R	200	1700	10°	102 x 102		Yes	Quote
636R	200	2600	15°	204 x 254		Yes	Quote
626R	200	3000	17.5°	52 x 52			Quote
103R	200	5000	29.8°	102 x 102			Quote
116R	180	150	0.7°	52 x 52		Yes	Quote
870R	180	4500	23.9°	102 x 102		Yes	Quote
142R	175	7600	41.6°	154 x 206		Yes	Quote
104R	165	7400	37.9°	102 x 102		Yes	Quote
250R	158	400	1.82°	134 x 178		Yes	Quote
400R	158	800	3.6°	128 x 154		Yes	Quote
202R	150	300	1.2°	102 x 102		Yes	Quote
201R	150	500	2.2°	128 x 154	Yes	Yes	Quote
426R	150	800	3.4°	154 x 206		Yes	Quote
501R	150	1090	4.7°	102 x 102		Yes	Quote
500R	150	1250	5.4°	154 x 206		Yes	Quote
349R	150	1450	6.2°	211 x 408		Yes	Quote
760R	150	2000	8.6°	154 x 206		Yes	Quote
810R	150	2500	10.8°	154 x 206		Yes	Quote
690R	150	3000	13°	154 x 206		Yes	Quote
860R	150	4000	17.5°	154 x 206		Yes	Quote
880R	150	6000	26.7°	154 x 206		Yes	Quote
890R	150	8000	36.8°	154 x 206		Yes	Quote
885R	135	7400	30°	64 x 64		Yes	Quote
616R	121.6	410	1.44°	52 x 52		Yes	Quote
065R	120	330	1.1°	102 x 102		Yes	Quote
625R	120	3750	13°	102 x 102		Yes	Quote
831R	120	7500	26.7°	65 x 76			Quote
746R	120	8300	30°	102 x 102		Yes	Quote
748R	120	13000	51.3°	64 x 64			Quote
019R	115	8100	27.8°	64 x 62		Yes	Quote
232R	115	10400	36.8°	154 x 206		Yes	Quote
138R	110.5	6800	22°	154 x 206		Yes	Quote
666R	110	253.8	0.8°	102 x 102		Yes	Quote
876R	105	8600	26.7°	84 x 84			Quote
011R	100	780	2.3°	102 x 102		Yes	Quote
108R	100	1600	4.6°	156 x 206		Yes	Quote
833R	100	2500	7.2°	102 x 102		Yes	Quote
886R	100	5200	15°	102 x 96		Yes	Quote
826R	100	6500	19°	64 x 64			Quote
830R	100	7500	22°	102 x 128			Quote
836R	100	8100	24°	44 x 50		Yes	Quote
970R	100	9000	26.7°	154 x 206		Yes	Quote
881R	97.5	4200	11.8°	102 x 102			Quote
829R	95.1	11030	32°	99 x 102			Quote
309R	90	1900	4.9°	212 x 408			Quote
686R	90	2750	7.1°	102 x 102			Quote
821R	90	6700	17.5°	64 x 64			Quote
036R	90	10000	26.7°	102 x 102		Yes	Quote
476R	86	950	2.3°	65 x 76		Yes	Quote
754R	85	1350	3.2°	102 x 102		Yes	Quote
755R	85	2140	5.1°	84 x 84		Yes	Quote
480R	80	870	2°	84 x 84		Yes	Quote
215R	80	4250	9.8°	204 x 408			Quote
005R	79.35	15000	35°	64 x 58		Yes	Quote
756R	75	1700	3.6°	102 x 102		Yes	Quote
750R	75	2000	4.3°	154 x 206		Yes	Quote
751R	75	2500	5.4°	154 x 206		Yes	Quote
740R	75	3000	6.5°	154 x 206			Quote
856R	75	4650	10°	102 x 102			Quote
950R	75	8000	17.5°	102 x 128		Yes	Quote
840R	75	10000	22°	154 x 206		Yes	Quote
960R	75	12000	26.7°	154 x 206		Yes	Quote
741R	70	3000	6°	64 x 64		Yes	Quote
064R	69.63	750	1.49°	64 x 64			Quote
843R	61.97	10000	18.1°	84 x 84			Quote
129R	60	750	1.26°	64 x 64		Yes	Quote
920R	60	16000	28.7°	154 x 206			Quote
921R	58	3600	6°	102 x 102		Yes	Quote
458R	56	19450	33°	204 x 410			Quote
235R	53	1750	2.7°	102 x 102		Yes	Quote
310R	50	600	0.9°	128 x 206		Yes	Quote
850R	50	9000	13°	154 x 206			Quote
855R	50	11500	16.7°	91 x 102			Quote
937R	50	12000	17.5°	102 x 102		Yes	Quote
910R	50	18000	26.7°	154 x 206		Yes	Quote
946R	50	19500	29.2°	102 x 102			Quote
189R	46.1	19600	46.1°	102 x 87			Quote
131R	45	1750	2.22°	64 x 64		Yes	Quote
900R	45	20000	26.7°	52 x 52		Yes	Quote
457R	44.5	20750	27.5°	204 x 410		Yes	Quote
842R	41.85	10600	12.8°	84 x 84			Quote
811R	40.96	3200	3.7°	52 x 52			Quote
923R	40	4800	5.5°	154 x 190		Yes	Quote
932R	40	15000	17.5°	84 x 84			Quote
980R	40	22500	26.7°	154 x 206		Yes	Quote
904R	36.152	1300	1.4°	58 x 58			Quote
903R	36.152	3250	3.5°	58 x 58			Quote
902R	36.152	4250	4.5°	58 x 58			Quote
146R	36	10100	10.5°	154 x 206			Quote
906R	35	2300	2.3°	65 x 76			Quote
934R	35	9200	9.3°	64 x 64		Yes	Quote
033R	32	10000	9.21°	64 x 64			Quote
135R	31.7	6800	6.18°	154 x 206		Yes	Quote
922R	30.7	4880	4.3°	102 x 91			Quote
256R	30	800	0.7°	102 x 102			Quote
606R	30	1100	1.1°	102 x 102		Yes	Quote
186R	30	2100	1.8°	102 x 102		Yes	Quote
933R	30	8000	6.9°	64 x 60		Yes	Quote
042R	30	95300	8.2°	64 x 64			Quote
931R	30	25000	20°	52 x 52			Quote
930R	30	30000	26.7°	102 x 128			Quote
936R	29.5	11400	9.7°	64 x 64			Quote
976R	25	36000	26.7°	52 x 52			Quote
123R	23.5	10000	6.75°	102 x 102			Quote
965R	22	25000	16°	102 x 102		Yes	Quote
841R	21.36	10600	6.5°	84 x 84		Yes	Quote
966R	21	28600	17.5°	64 x 64			Quote
956R	20	22500	13°	102 x 102			Quote
940R	20	45000	26.7°	102 x 102		Yes	Quote
944R	17.5	4200	2.1°	102 x 102		Yes	Quote
941R	14.3	4000	1.74°	52 x 52			Quote
942R	14.3	8000	3.33°	52 x 52			Quote
916R	12	6800	2.3°	65 x 76		Yes	Quote
156R	11.5	4000	1.3°	65 x 76			Quote
996R	7.9	112500	26.7°	154 x 206			Quote
145R	1.99	21400	1.2°	154 x 206		Yes	Quote

Features

Plane Ruled Diffraction Grating Construction

In general, for ruled diffraction gratings the groove spacing determines the diffraction angles, and the groove depth and blaze angle determines how diffracted energy is distributed between diffraction orders. Designed for first order Littrow use, Newport’s Plane Ruled Reflection Gratings are blazed to achieve extremely high single-order diffraction efficiency at particular design wavelengths. At Newport, we have three ruling engines in full-time operation, each producing high-quality master gratings each year. These ruling engines provide gratings with triangular groove profiles, very low Rowland ghosts, and high resolving power. Mechanically ruled, individual grooves are burnished with a diamond tool against a thin coating of evaporated metal. Utilizing a high fidelity cast replication process, developed and enhanced through years of research and manufacturing experience, we have the ability to provide duplicates of master gratings that equal the quality and performance of the master grating.

Optimum Diffraction Grating Orientation

Plane Ruled Diffraction Gratings are most efficient when used near the design wavelength in the Littrow configuration, that is aligned so that the diffraction angle of the dominant diffraction order is coincident with the input beam, effectively behaving as a retroreflector at a specific wavelength. For blazed gratings, maximum efficiency occurs for wavelengths that the Littrow condition at the angle normal to the blazed grating facets. As ruled blaze gratings are asymmetric, correct orientation is indicated with an arrow marking on the size of the substrate. The arrow is on the side of the substrate perpendicular to the ruled grooves, and points toward the steeper edge of the triangular groove profile. Equivalently, the arrow points away from the grating normal toward the facet normal. The arrow should point toward the incident (and diffracted) beam.

Catalog Part Number System

All standard Richardson gratings have a part number according to the following format:

AA BBB CC DD - EEE x

AA indicates the type of grating (e.g., diced, plano, grism).
BBB indicates the size of the grating substrate.
CC indicates the substrate material
DD indicates the type of coating
EEE indicates the master grating groove parameters
x indicates the master grating type (e.g., ruled, holographic, echelle)

Please see Diffraction Grating Part Number System for additional information.

Grating Size Options

Grating size is usually dictated by the desired throughput, which is a function of the source and detector characteristics, the resolution of the optical system, and the required data-acquisition rate. The ruled area of each plane grating is shown in the specification table as the "Maximum Ruled Area" which is the groove length followed by the ruled width (for example, 65 x 75 mm indicates a groove length of 65 mm and a ruled width of 75 mm). This determines the largest size allowed from the size options table below.

The dimensions of the ruled area and the substrate may be altered from the regular catalog sizes at an additional cost. Special elongated grating shapes are available (e.g., for echelles and laser tuning gratings).

Size Code BBB	Substrate Dimensions (mm)	Ruled Area (mm)
108	16.5 x 58 x 10	12 x 52
004	30 x 30 x 10	26 x 26
066	28.5 x 58 x 10	23 x 52
107	40 x 40 x 10	36 x 36
060	25 x 100 x 16	20 x 96
067	50 x 50 x 10	46 x 46
022	30 x 110 x 16	26 x 102
006	58 x 58 x 10	52 x 52
009	68.6 x 68.6 x 9.1	64 x 64
119	68 x 68 x 6	64 x 64
114	50 x 100 x 16	46 x 96
033	76 x 76 x 16	70 x 70
010	76 x 85 x 16	70 x 79
013	90 x 90 x 16	84 x 84
015	110 x 110 x 16	102 x 102
017	110 x 135 x 25	102 x 128
020	135 x 165 x 30	128 x 154
025	110 x 220 x 30	102 x 204
027	135 x 220 x 35	128 x 204
028	165 x 220 x 35	154 x 206

Grating Substrate Material Options

The standard substrate material for small and medium-sized gratings is specially annealed borosilicate crown glass. Low expansion material can be supplied on request. Float glass may be used for small, diced gratings. In addition, replicas may be furnished on metal substrates, such as copper or aluminum, for applications with extreme thermal conditions. The substrate material codes CC are given below:

Substrate Material Code CC	Substrate Material
AL	Aluminum
BF	Borosilicate float or equivalent
BK	BK-7 glass or equivalent
CU	Copper
FL	Float glass
FS	Fused silica or equivalent
LE	Low-expansion glass
SP	Special glass (unspecified)
TB	BK-7, transmission grade
TF	Fused silica, transmission grade
UL	Corning ULE® glass
ZD	Schott Zerodur®

Diffraction Grating Coating Options

All reflection gratings include a standard aluminum (Al) reflectance coating (Coating Code "01"). Gratings can also be replicated in gold (Au), or overcoated with magnesium fluoride (MgF₂) or silver (Ag), to enhance reflectivity in certain spectral regions. The coating material codes DD are shown below:

Coating Code DD	Coating Material	Application
01	Aluminum (Al)	General purpose applications.
02	Gold (Au)	Offers higher reflectivity in the infrared.
03	Magnesium Fluoride (MgF₂)	Used to prevent oxidation of aluminum (Al) coatings, which helps maintain high reflectivity in the ultraviolet over time.
06	Protected Silver (Ag)	Offers higher reflectivity in the visible and near infrared. Silver is protected from tarnishing by a dielectric coating, which helps maintain reflection over time.

Custom Diffraction Gratings

Newport is pleased to discuss special and unusual applications that are not addressed by our build to order catalog diffraction gratings. In some instances, none of the hundreds of master gratings we have in stock meet specifications, so a new master may be required. Please see Custom Diffraction Gratings for additional information on our capabilities.