Laser Glass JG2
JG2 is a high-quality laser glass featuring a high neodymium-ion doping concentration, low n₂ and a low thermo-optic coefficient. The maximum dimensions are 820mm×460mm×60mm. The properties of JG2 glass are listed below.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Nd₂O₃ | 4.10 wt.% |
| Nd³⁺ Concentration | 4.15 10²⁰ions/cm⁻³ |
| Stimulated Emission Cross Section δp | 3.6 10⁻²⁰cm² |
| Fluorescence Lifetime τ | 310 μsec |
| Fluorescence Line Full Width at Half Maximum Δλ | 21.8 nm |
| Nonlinear Refractive Index n₂ | 1.12 10⁻¹³e.s.u |
| Refractive Index at 1053nm n(1053) | 1.52005 |
| Refractive Index at 632.8nm n(632.8) | 1.52793 |
| Refractive Index at 587.6nm n_d | 1.52962 |
| Refractive Index at 486.1nm n_F | 1.53515 |
| Refractive Index at 656.3nm n_C | 1.52718 |
| Abbe Number υ_d | 66.5 |
| Brewster Angle | 56°40′ |
| Temperature Coefficient of Refractive Index (20～40℃) dn/dt [20 ～40 ℃] | -5.3 10⁻⁶/℃ |
| Linear Thermal Expansion Coefficient (20～40℃) [20 ～40 ℃] | 11.2 10⁻⁶/℃ |
| Temperature Coefficient of Optical Path Length (20～40℃) ds/dt [20 ～40 ℃] | +0.6 10⁻⁶/℃ |
| Transition Temperature Tg | 485 ℃ |
| Softening Temperature Ts | 520 ℃ |
| Linear Thermal Expansion Coefficient (100～300℃) α [100 ～300 ℃] | 127 10⁻⁷/ ℃ |
| Thermal Conductivity (25℃) χ [25 ℃] | 0.50 Kcal/m·h· ℃ |
| Specific Heat Capacity (25℃) Cₚ [25 ℃] | 018 cal/g· ℃ |
| Stability Under Water Exposure (H₂O, 100℃, 1Hr) D_w [H₂O ，100℃ ，1Hr] | 0.13 wt.% (weight loss) |
| Stability Under Acid Exposure (HNO₃, PH2.2, 100℃, 1Hr) D_A [HNO₃ ，PH2.2,100℃ ，1Hr] | 0.47 wt.% (weight loss) |
| Density ρ | 2.83 g/cm³ |
| Young's Modulus E | 5110 kgf/mm² |
| Shear Modulus G | 2030 kgf/mm² |
| Poisson’s Ratio μ | 0.258 |
| Knoop Hardness (100gf, 15sec) Hₖ [100gf，15sec] | 350 kgf/mm² |
| Stress-Optic Coefficient B | 1.93 nm/cm/kgf/mm² |
Datasheet
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Supplier Information
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