Wasatch Photonics: Highest performance diffraction gratings

Sample Grating Data

NOTE: This page only contains theoretical models at this time.

Wasatch Photonics combines its patented technologies with trade secrets to make Enhanced-Volume Phase Holographic Gratings (VPHGs) and Holographic Optical Elements (HOEs). These All-In-One, high performance gratings are ideal for many applications. Dickson Gratings® are a specialized form of VPH gratings that combine high dispersion, high S & P diffraction efficiencies, and low polarization dependent loss. Our transmission gratings enable more compact devices, design flexibility, reduction in optical components, and manufacturing simplicity.

Request A Custom Grating	Grating Diagram and Sealing Methods
Master Grating List	S (TE) & P (TM) Polarization Definitions
Glass & Glue Types	Cleaning Gratings
Zero Order Spectrometer Measurements Explained	Fresnel Reflection & Transmission Loss % (Glass without AR coating)
FAQs

Volume Phase Holographic Gratings These are theoretical models of transmission gratings, unless stated otherwise. We have made many of these gratings for customers and measured performance that compares to the theoretical models.. We are happy to make them for you although we do not stock most of these gratings.
Dickson Gratings® highlighted in yellow (combines max dispersion and S & P efficiencies, min PDL)
Gratings with S & P matched closely highlighted in gray
S (TE) Polarization Maximized Gratings highlighted in green
P (TM) Polarization Maximized Gratings highlighted in light blue
Low Dispersion Gratings (LD-XXX) highlighted in light fuchsia
• Diffraction Efficiencies: Best Plots • Assumptions: 5-8% total loss (reflection, absorption, & scattering)	Spatial Frequency (lpmm)	CWL or blaze wavelength (nm)	Nominal AOI/AOD (degrees)	Notes
3600 lpmm at 415nm Dickson® single pass grating	3600	415	48.3
3000 l/mm at 360 nm	3000	360	32.68
2730 lpmm at 532 nm Dickson® single pass grating	2730	532	46.6
2400 l/mm at 415 nm	2400	415	29.87
2400 lpmm at 532 nm	2400	532	39.67	S polarization >92%
2400 lpmm at 532 nm	2400	532	39.67
2400 lpmm at 590 nm	2400	590	45.07	Highest Average
2300 lpmm at 532 nm	2300	532	37.7	S polarization >92%
2300 l/mm at 520 nm	2300	520	36.73
2300 lpmm at 532 nm	2300	532	37.7
2300 lpmm at 605 nm	2300	605	44.09
1850 lpmm at 785 nm Dickson® single pass grating	1850	785	46.6
1840 lpmm at 800 nm Dickson® single pass grating	1840	800	47.4
1800 l/mm at 532 nm	1800	532	28.6
1800 lpmm at 785 nm	1800	785	44.95	S polarization >92%
1800 lpmm at 800 nm	1800	800	46.05
1800 lpmm at 800 nm Quasi-Dickson® single pass grating	1800	800	46.05
1800 lpmm at 830 nm	1800	830	48.33
1750 lpmm at 830 nm Dickson® single pass grating	1750	830	46.6
1700 lpmm at 830 nm	1700	830	44.87	S polarization >92%
1700 lpmm at 1054 nm	1700	1054	63.6	S polarization >92%
1670 lpmm at 880 nm Dickson® single pass grating	1670	880	47.29
1608 lpmm at 880 nm Quasi-Dickson® single pass grating	1608	880	45.0
1500 lpmm at 800 nm	1500	800	36.87
1500 lpmm at 830 nm	1500	830	38.5
1300 l/mm at 560 nm	1300	560	21.35
1245 lpmm at 1185 nm Dickson® single pass grating	1245	1185	47.53
1200 lpmm at 500 nm	1200	500	17.46
1200 lpmm at 550nm	1200	550	19.3	P Polarization
1200 lpmm at 600nm	1200	600	21.1
1200 lpmm at 785 nm	1200	785	28.1
1200 lpmm at 800 nm	1200	800	28.68
1200 lpmm at 830 nm	1200	830	29.87
1200 lpmm at 850 nm	1200	850	30.66
1200 lpmm at 920 nm	1200	920	33.5
1200 lpmm at 1032 nm	1200	1032	38.3	S Polarization >90%
1156 l/mm at 655 nm	1156	655	22.25
1132 l/mm at 610 nm	1132	610	20.20
1145 lpmm at 1310nm Dickson® single pass grating	1145	1310	48.59
1110 lpmm at 1310nm Dickson® single pass grating	1110	1310	46.6
1095 lpmm at 700nm	1095	700		P Polarization >90%
1026 l/mm at 735 nm	1026	735	22.15
940 lpmm at 600nm	940	600	16.4
940 lpmm at 850 nm	940	850	23.55
940 lpmm at 875 nm	940	875	24.28
940 lpmm at 1550 nm Dickson® double pass reflection grism	940	1550	46.761
940 lpmm at 1545 nm Dickson® double pass grating	940	1545	46.565	6.4 degrees per 40 nm
940 lpmm at 1545 nm Dickson® single pass grating	940	1545	46.565	3.2 degrees per 40 nm
940 lpmm at 1510, 1545, 1590 nm Tunable Dickson® single pass grating	940	C, S, L Bands	varies	~3 degrees per 40 nm
900 lpmm at 1310 nm	900	1310	36.12
850 l/mm at 885 nm	850	885	22.09
800 lpmm at 480 nm	800	480	11.07
600 lpmm at 1310 nm	600	1310	23.14
600 lpmm at 1550 nm transmission	600	1550	27.710
600 lpmm at 560 nm	600	560	9.67
600 lpmm at 600 nm	600	600	10.37
600 lpmm at 633 nm	600	633	10.95
600 lpmm at 800 nm	600	800	13.89
600 lpmm at 900 nm	600	900	15.66
600 lpmm at 1570 nm	600	1570	28.1
540 lpmm at 740 nm	540	740	11.53
425 lpmm at 650 nm	425	450-850
400 lpmm at 650 nm	400	650	7.470
300 lpmm at 1550 nm double pass reflection	300	1550	13.44
250 lpmm at 1700 nm	250	1700	12.27
LD-220 lpmm at 550 nm	220	400-700		>35%
LD-155 lpmm at 1325 nm	155	950-1700		>35%
LD-125 lpmm at 550 nm	125	400-700		>35%
LD-118 lpmm at 550 nm	118	450-850		>35%

DWDM-Quality Gratings: We make patent pending Dickson gratings® for next generation systems and also drop-in replacement gratings for current generation systems. Each of our DWDM gratings combines *ALL* of these features into *ONE* grating:
	High Dispersion
	Extremely High Efficiency (>95%)
	Extremely Low PDL (<0.2dB)
	Flat Response Across C, S, or L Bands

Grating Properties:
	Additional Technical Information On Dickson Gratings®
	Enhanced - Volume Phase Gratings Recorded In Dichromated Gelatin (DCG)
	DCG Is Sealed In Between Glass Substrates
	Rugged, Scratch Resistant, & Easily Handled
	High Thermal Stability

Capabilities:
	Custom Groove Frequencies
	Custom Wavelengths
	Prism & Mirror Configurations
	Various Substrates (e.g. Fused Silica)
	AR Coating
	Aluminum & Gold Reflection Coating

Let us make products for your specific needs.

Please review our Grating FAQs, fill out our Customer Grating Worksheet, or contact us.

Wasatch Photonics

Sales: 435-752-4301 · Fax: 435-752-4306
info@wasatchphotonics.com