Dear sirs,
At the time Polycrystalline Chemical Vapor Deposited Zinc Selenide (CVD-ZnSe) is the optimal material when being used for passive optics of CO2-lasers manbufacture. The CO2-lasers are commonly used in different brunches of activity: from small personal sets for cutting and graving of wood and plastics to high-power applications in key heavy industries. We are open for discussion, will be always glad either to inform or to receive the information, touching the application ZnSe.
We will be happy to work with you as our new customers!

Yours faithfully Alexander Yu. Dadanov, Director, Dr. of Chem

____________________________________________________Units
Optical Properties:

Bulk Absorption Coefficient (10.6 µm)____________________/cm____0.0005
Temperature Change of Refractive Index(10.6 µm)_____X10-6/°C________61
Refractive Index Inhomogeneity (632.8nm)_______________________<6X10-6

Thermal Properties:

Thermal Conductivity_________________________________W/cm/°C______0.18
Specific Heat_________________________________________J/g/°C_____0.356
Linear Expansion Coefficient (20°C)_________________X10-6/°C______7.57

Mechanical Properties:

Young's Modulus________________________________X1011 dyne/cm2_____6.85
Rupture Modulus_________________________________X108 dyne/cm2______5.7
Knoop Hardness_________________________________________Kg/mm2__110-130
Density_________________________________________________g/cm2_____5.27
Poisson's Ratio___________________________________________________0.28
Multiply dyne/cm2X1.45X10-6 to give PSI

Tel./Fax +7-8312-338197
e-mail: octant@sandy.ru
www.octant.narod.ru
Dadanov Alexander - Director, Dr. of Chem.
Dubinin Vitaly – senior engineer
Kuznetsov Andrew – engineer of technoloque