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Home > Products > IPL Light Guides > Sapphire Light Guides
Sapphire Light Guides

Sapphire light guide are the key optical element for IPL (Intense Pulsed Light) machine, which filters the UV wave and reserve the useful wave from 400nm to 1200nm for cosmetic laser, such as hair removal, vascular and acne treatment. At the same time, it is a key component to cool the skin.


Vanrun OE provides a variety of customized sapphire IPL light guides. The main types are cubiod / cube, pyramid or quadrangular pyramid, etc. The 515nm, 530nm, 550nm, 560nm, 570nm, 590nm, 615nm, 645nm, 695nm, 755nm, 780nm cut-off filter coatings are avaliable.


Specifications of sapphire light guides:

Material:

CZ, KY, HEM monocrystal sapphire

Dimenision Range:

10*15*45mm,10*12*15mm,12*20*28mm,15*16*46mm, customized

Dimenision Tolerance:

+/-0.05mm, +0/-0.1mm

Surface Quality:

 60-40, 80-50 (MIL13830)

Surface Accuracy:

up to 1 lambda per 25@633nm

Parallelism:

3 arc min

Chamfer:

protective, 0.2 to 0.5x45 Degree

Coating:

non, AR, Cut-off

Proterties of sapphire crystal:
Physical and optical proterties

Transimission Range0.17 to 5.5um
Refractive IndexNo 1.75449; Ne 1.74663 @ 1.06um
Reflection Loss14% @ 1.06um
Absorption Coefficient0.3 x 10-3cm-1 @2.4um
Reststrahlen Peak13.5um
dn/dT13.1x10-6 @ 0.546um
dn/du = 01.5 um
Density3.97 g/cc
Melting Point2040 
Thermal Conductivity27.21 W m-1 K-1 @ 300K
Thermal Expansion5.6 (para) & 5.0 (perp) x 10-6/K
HardnessKnoop 2000 with 2000g indenter
Specific Heat Capacity763 J Kg-1 K-1 @ 293K
Dielectric Constant11.5 (para) 9.4 (perp) @ 1MHz
Youngs Modulus (E)335 GPa
Shear Modulus (G)148.1 GPa
Bulk Modulus (K)240 GPa
Elastic CoefficientsC11=496 C12=164 C13=115 C33=498 C44=148
Apparent Elastic Limit300MPa （45,000 psi)
Poisson Ratio0.25
Solubility98x10-6g/100g water
Molecular Weight101.96
Class/StructureTrigonal (hex), R3c