光学
ゲルマニウム (Ge)
Use Germanium's unique combination of high refractive index and excellent hardness to build durable, low-power imaging and laser systems with a minimum component count.
Germanium (Ge) is ideal for applications where ruggedness and durability are important, and Ge optics can withstand optical powers in the range of 50-100 watts. Its high refractive index enables its use as a beamsplitter without additional coating.
Germanium (Ge) Characteristics
Coherent supplies Ge substrates of up to 150 mm diameter, and carefully monitors 10.6 µm absorptivity to ensure that thermal runaway and fracture do not occur.
Ge Material Properties |
|
物理的特性 |
|
ヤング率 |
100 GPa (12.04 x 106 psi) |
破断弾性率 |
93 MPa (20,000 psi) |
ヌープ硬度 |
692 kkg/mm² |
密度 |
5.32 g/cm³ |
ポアソン比 |
0.27 |
熱特性 |
|
Thermal Conductivity @ 20° C |
0.59 W/cm/°C |
比熱 |
0.31 J/g/°C |
20°Cにおける線膨張係数 |
5.7 x 10-6/°C |
光学特性 |
|
Bulk Absorption @ 10.6 μm |
<0.03 cm-1 |
Temperature Change of Refractive Index @ 10.6µm |
408 x 10-6/°C |
関連製品
光学製造能力
Coherent材料成長、加工、コーティング、組立までの垂直統合型体制と、厳格な品質保証(QA)についてご紹介します。これらが当社の光学部品の性能と信頼性を確保し、サプライチェーンのリスクや不確実性を最小限に抑える仕組みをご覧ください。