| Nd - Glass |
|---|
PROPERTIES OF IRE NEODYMIUM PHOSPHATE LASER GLASS | | GLS-26 | LGS-T& modifications | | Spectroscopic Properties | | | | Peak wavelength (nm) | 1054 | 1053 | | Cross section (x10-20 cm2) | 3.0 | 4.0 | | Fluorescent lifetime (msec) | 220-290 | 190 -380 (depends from Nd concentration) | | Linewidth FWHM (nm) | 21 | 18 | | Loss @ lasing wavelength (cm-1) | < 0.001 | < 0.001 | | Optical Properties | | | | Index of refraction (nd) | 1.57 | 1.51 | | dn/dT (10-6/oC) (20 - 40oC) @ 1060 nm | - 4.7 | -3.2 - -5.7 | | Thermo-optical coeff. W, x 10-7 K-1( 20 oC) @ 1060 nm | 6 | 25 - 10 | | (dW/dT), x 10-8 K-2 | 1,4 | 0,9 | | Thermal Properties | | | | Transformation point (oC) | 525 | 420 | | Thermal expansion coefficient (20 - 40 oC), (10-7 / oC) | 99 | 112 - 135 | | Thermal conductivity (W / m x K) | 0.7 | 0.8 - 0.83 | | Chemical Properties | | | | DW (H2O 100oC 1hr) Wt % loss | 0.017 | 0.1 - 0.18 | | Physical Properties | | | | Density (g/ cm3) | 3,37 | 2.8 -3.0 | | Knoop hardness | 510 | 410 - 450 | | Damage threshold (30 ns) J/cm2 | > 20 | > 20 |
IRE RAS Nd-glasses characterized by an excellent laser performance and a low beam devergence. GLS-26 exhibit a high chemical durability. IRE RAS strengthened method does not destruct optical path as against method of ion-exchange. IRE RAS strengthened rods operate from zero pump power. Nd-Glass Performance 
Nd Concentrations.Neodimium ion concentration is available from 1019 cm-3 up to 1021 cm-3. Laser Roads.Nd Glass is available in Laser Rods P/P/AR/AR @ 1055 nm and Road Blanks (unpolished) by sizes 1 - 20 mm (in diameter) x 1 - 250 mm (length). AR coating: Damage > 1 GW/cm2, R < 0,25%. |
