Nd:GdVO4　レーザー結晶

ネオジムドープ・ガドリニウム・オルソバナデート
Nd:GdVO4は、Nd:YVO4と物理特性、光学特性、機械特性が類似している優れたレーザー結晶です。
ダイオード励起の全固体レーザーのホスト結晶として最適です。

特徴

仕様

Crystal Structure Tetragona
Space Group I41/amd
Lattice Paramete a=0.721 nm, b=0.635 nm
Lasing Transition 4F3/2 → 4I11/2
Lasing Wavelength 1062.9 nm
Emission Cross Section (at 1064 nm) 7.6 × 10-19 cm2
Absorption Cross Section (at 808 nm) 4.9 × 10-19 cm2
Absorption Coefficient (at 808 nm) 74 cm-1
Index of Refractivity (at 1064 nm) n0=1.972, ne=2.192
Thermal Conductivity (<110>) 11.7 W/(m × K)
Density 5.47 g/cm3
Nd Dopent level (atomic) 0.1%, 0.2%, 0.3%, 0.5%, 0.7%, 1.0%...

Information Regarding Neodymium Laser Host Crystals

Crystal Nd:YVO4 Nd:GdVO4 Nd:YAG
Laser Wavelengths 1064.3 nm, 1342.0 nm 1062.9 nm, 1340.0 nm 1064.2 nm, 1338.2 nm
Emission Bandwidth (linewidth at 1064nm) 0.8nm No dara 0.45nm
Effective laser cross section
(emission cross section at 1064nm)		 15.6 × 10-19cm2 7.6 × 10-19cm2 6.5 × 10-10cm2
Polarization Parallel to c-axis Parallel to c-axis unpolarized
Pump Wavelength 808.5 nm 808.4 nm 807.5 nm
Peak Pump Absorption at 1% Doping ~41 cm-1 ~57 cm-1
Thermal Conductivity, W/nK 5.1 11.7(Ref.7) 14
Doping Concentration Range 0.1～3.0% 0.1～3.0% 0.1～2.0%

材料特性：Nd:GdVO4とNd:YVO4との比較

Crystal Nd:GdVO4 Nd:YVO4
Crystal Structure, Space Group Tetragonal, 141/amd Tetragonal, 141/amd
Lattice Constants, nm a:0.721, b:0.635 a:0.721, b:0.629
Melting Temperature, ℃ 1780 1825
Thermal Expansion@25℃, ×10-6/℃ a:1.5, b:7.3 a:4.43, b:11.4
Specific Heat@25℃, cal/mol K 32.6 24.6
dn/dT, ×10-6/℃ 4.7 2.7

基本仕様