Dayoptics, Inc. - Crystal Optics, Optical Crystal Manufacturer from China.

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	- Overview
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Optical Crystal

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Overview

Optical Crystal	Sapphire Crystal	Undoped YAG Crystal	CaF2

Basic Properties
Crystal structure	Hexagonal System	Cubic	cubic
Lattice Constant	a=4.75;c=12.97		a=5.462
Density	3.98g/cm³	4.5g/cm³	3.18 g/cm³
Transmission Range	150~5500nm	250~5000nm	170 nm~7800 nm
Melting Point	2030?	1970 °C	1360 °C
Specific Heat	0.418 W.s/g/K	0.59 W.s/g/K
Thermal Conductivity	25.12 W/m/K	14 W/m/K	9.71W/m/K
Thermal Shock Resistance	790 W/m	790 W/m
Thermal Expansion Coefficient	5.8x10^-6 /K	6.9x10^-6 /K	18.85X10^-6 /K
dn/dt, @633nm	13x10^-6 /K	7.3x10^-6 /K -1
Mohs Hardness	9	8.5	6
Refractive Index	1.83 @0.26 mm, 1.76 @0.63 mm,1.58 @5.57 mm	1.8245 @0.8 mm 1.8197 @1.0 mm 1.8121 @1.4 mm	1.6921mm - 1.3161mm
Specifications of Windows and Mirrors
Diameter	+/-0.0, -0.1mm	+/-0.1mm	+/-0.0, -0.1mm
Thickness	+/-0.2mm	+/-0.2mm	+/-0.2mm
Flatness	better than λ per 25 @633nm	better than λ/8@633nm	better than λ per 25 @633nm
Parallelism	better than 3'	better than 30''	better than 3'
Perpendicularity	better than 5'	better than 5'	better than 5'
Scratch-Dig	80-50 per MIL-O-13830A	10-5 per MIL-O-1383A	80-50 per MIL-O-13830A
Wavefront Distortion	less than l /2 per inch @1064nm	better than l /2 per inch@1064nm	less than l /2 per inch @1064nm

Days Optics offers a wide variety of quality optics from conventional optical components like optical crystals and crystal optics. We provide high quality optical components, including crystals and optics for a wide range of optical crystal requirements. Manufacture Crystal Optical Components such as Optical Windows, Lenses, BeamSplitters for Lasers and as per customer's specifications.