欧美黑人巨大xxxxx_永久黄网站色视频免费直播_国产乱来乱子视频_超碰97资源站

Nd:YAG (neodymium-doped yttrium aluminium garnet; Nd:Y3Al5O12) is a crystal that is used as a lasing medium for solid-state lasers. The dopant, triply ionized neodymium, typically replaces yttrium in the crystal structure of the yttrium aluminium garnet (YAG), since they are of similar size. Generally the crystalline host is doped with around 1% neodymium by atomic percent.
+86
Detail

Nd:YAG (neodymium-doped yttrium aluminium garnet; Nd:Y3Al5O12) is a crystal that is used as a lasing medium for solid-state lasers. The dopant,

triply ionized neodymium, typically replaces yttrium in the crystal structure of the yttrium aluminium garnet (YAG), since they are of similar size. Generally the crystalline host is doped with around 1% neodymium by atomic percent.


Applications:

Nd:YAG absorbs mostly in the bands between 730–760 nm and 790–820 nm.At low current densities krypton flashlamps have higher output in those bands

than do the more common xenon lamps.


Nd:YAG Specification or or based on clients' requirements


Material:

Domestic or foreign materials are selected based on clients' requests

Nd Dopant Concentration:

0.5-1.2 atm%tolerance within 10% of concentration

Diameter:

3 ~ 14mm

Length(L):

0.5~160mm

Orientation:

<111> crystalline direction (+/-0.5℃)

Flatness:

<λ/8 @ 633nm

Smooth Finish:

20-10

Parallelism:

30"

Perpendicularity:

10'

Wavefront Distortion:

< λ/8 @ 633nm

Clear Aperture:

> 90%

Coating:

According to customer request


Physical and Optical Properties::


Chemical Formula:

Nd:Y3A15O12

Crystal Structure:

Cubic

Lattice Constants:

12.01?

Concentration:

~ 1.2 x 1020 cm-3

Melting Point:

1970 °C

Density:

4.56 g/cm3

Mohs Hardness:

8.5

Refractive Index:

1.82

Thermal Expansion Coefficient:

7.8 x 10-6 /K [111], 0 - 250 °C

Thermal Conductivity:

14 W/m /K @20 °C, 10.5 W /m /K @100 °C

Lasing Wavelength:

1064 nm

Stimulated Emission Cross Section:

2.8x10-19 cm-2

Relaxation Time of Terminal Lasing Level:

30 ns

Radiative Lifetime:

550 ms

Spontaneous Fluorescence:

230 ms

Loss Coefficient:

0.003 cm-1 @ 1064 nm

Effective Emission Cross Section:

2.8 x 10-19 cm2

Pump Wavelength:

807.5 nm

Absorption band at pump wavelength:

1 nm

Linewidth:

0.6 nm

Polarized Emission:

Unpolarized

Thermal Birefringence:

High