YS-Rod
This product is a high concentration Yb^3+ doped large size silica glass. It is based on innovative nano-powder doping and high temperature sintering technology - large size, high optical uniformity and low loss Ytterbium doped quartz (silica) glass rods that have been successfully fabricated.
It can be used as the core of ultra-large mode area micro-structure fibers and gain medium of solid-state lasers. It has important application value in high power CW lasers and high energy ultra-short pulse lasers.
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Physical Optical Properties
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Refractive index fluctuations: ≤ 1 x 10^-4
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Refractive index control range @ 1064 nm: ~ 1.45
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Attenuation (dB / m @ 1200 nm): ​ ​≤ 0.1
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Linear expansion coefficient: ~ 6.5
(10^-7 / ºC ( 20 ~ 100ºC )
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Density (g / cm^3): 2.21
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Glass transition temperature T_g (ºC ): > 1000
Spectroscopy Properties
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Doping concentration (ppm): 5000 - 20000
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Fluorescence lifetime (μs) @ 1030 nm: 850
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Absorption cross-section (pm^2) @ 915 nm: ~ 0.6
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Emission cross section（pm^2）@ 1030nm: ~ 0.9
Geometry Size
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Diameter (mm): ≥ 5
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Length (mm): ≥ 100​​​