Er,Cr:YSGG

Formula                          Y2.93Sc1.43Ga3.64O12

Density                          5.67 g / cm3 

Hardness (Moh)               8

Chamfer                         45 deg ±5 deg

Parallelism                      30 arc seconds

Perpendicularity              5 arc minutes

Surface Quality               10 - 5 scratch-dig

Wavefront Distortion        1/2 wave per inch of length



YSGG (Yttrium Scandium Gallium Garnet) doped with Chromium and Erbium provides an efficient laser crystal for generating 2.8 micron light in an important water absorption band.

Advantages of Cr, Er: YSGG

Lowest threshold and highest slope efficiency of common Erbium doped crystals(1,2)

Can be flash lamp pumped via Cr bands or diode pumped via Er bands

Operates CW, free-running or Q-switched

The intrinsic crystal disorder increases pump line widths and tenability

Basic properties

Formula

Y2.93Sc1.43Ga3.64O12

Structure

cubic, Garnet

Density (g / cm3 )

5.67 (Cr & Er doped)

Index of Refraction at 1 micron

1.92 at 1 um

dn / dT (10-6K -1 )

12 x 10-6 K-1

Thermal Conductivity (W / m K)

8 Wm-1K-1

Hardness (Moh)

8

Chemical Resistance

Inert

Growth Method

Czochralski

Chromium Concentration

2 at % (1.7 x 1020 cm-3 , octahedral Cr3+)

Erbium Concentration

30 at % (3.7 x 1021 cm-3 , dodecahedral Er3+)

Rod Diameters

up to 15 mm

Diameter Tolerance

+0.0000 / -0.0020 in

Length  Tolerance

+0.040 / -0.000 in

Tilt / Wedge Angle

±5 min

Chamfer

0.005 ±0.003 in

Chamfer Angle

45 deg ±5 deg

Barrel Finish

55 micro-inch ±5 micro-inch

Parallelism

30 arc seconds

End Figure

λ / 10 wave at 633 nm

Perpendicularity

5 arc minutes

Surface Quality

10 - 5 scratch-dig

Wavefront Distortion

1/2 wave per inch of length

Customized

You can customise this product to your needs. If you do not find suitable specifications for your application please contact us for custom solution.