Nd:KGW Crystals

Nd:KGW crystals are low lasing threshold highly efficient laser material exceptionally suitable for laser rangefinding applications. The efficiency of Nd:KGW lasers is 3–5 times higher than that of Nd:YAG lasers. Nd:KGW laser medium is one of the best choices ensuring effective laser generation at low pump energies (0.5–1 J). These crystals feature high optical quality and great value of bulk resistance to laser radiation. Existing technology produces single crystals of up to 3 kg, thus allowing reliable and high yield fabrication of round elements of up to 12 mm in diameter and up to 120 mm in length.

Delivery

Estimated delivery time: from 7 - 8 weeks

Description
Dimensions
Coating
Code Description Dimensions Coating Price Delivery Add to cart
NdKGW-0324-02 Nd:KGW crystal, 3 % doping, b-cut Ø3x50 mm AR/AR@1350 nm Request Request To cart
NdKGW-0324-03 Nd:KGW crystal, 3 % doping, b-cut Ø9x7 mm S1: AR@1067 nm, S2: AR@808 nm + HR@1067 nm Request Request To cart
NdKGW-0324-04 Nd:KGW crystal, undoped, b-cut Ø5x70 mm AR/AR@1067 nm Request Request To cart
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STANDARD SPECIFICATIONS

Orientation

[010] ±30 min

Dopant concentration

2-10 at %

Diameter tolerance

+0.0/-0.1 mm

Length tolerance

+1.0/-0.0 mm

Chamfer

45(±10) deg × 0.2(±0.1) mm

Flatness

λ/10 @ 633 nm

Parallelism

better than 30 arcsec

Perpendicularity

better than 15 arcmin

Surface finishing

10/5 scratch/dig

Absorption losses

< 0.005 cm-1


 Physical and Laser Properties

Chemical formula

KGd(WO4):Nd

Lattice constants

a = 8.095 Å, b = 10 Å, c = 7.588 Å

Optical orientation

ng = b, npc = 20 deg

Angle between optical axis

86.5 angular grad

Density

7.27 g/cm3

Mohs hardness

5

Thermal conductivity

2.8 W/(m×grad) [100]
2.2 W/(m×grad) [010]
3.5 W/(m×grad) [001]

Thermal expansion

4×10-6 grad-1 [100]
3.6×10-6 grad-1 [010]
8.5×10-6 grad-1 [001]

Phase transition

1005°C

Melting point

1075°C

Transmission range

0.35-5.5 µm

Refractive indice

ng = 2.033 @ 1.067 µm
np = 1.937 @ 1.067 µm
nm = 1.986 @ 1.067 µm

Transition

4F3/2 -> 4I11/2

Laser wavelength

1.0672 µm

Fluorescence lifetime

120 µs

Fluorescence width

24 cm-1

Emission cross-section

4.3×10-19 cm-2

Emission cross-section

8.5×10-4 nm, K-1

 

 

 

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