language
中国
韩国
韩国
韩国
韩国
韩国

PRODUCTS

 

MESSAGES

Username used for comment:
Customer message
Description:
Customer message

Related Items

/
/
/
-
Yb:KGW - Ytterbium Doped Potassium Gadolinum Tungstate

Products

Yb:KGW - Ytterbium Doped Potassium Gadolinum Tungstate
15
  • Yb:KGW - Ytterbium Doped Potassium Gadolinum Tungstate

  • Yb:KGW, as an excellent laser gain material, has wide absorption spectrum at 980 nm and high absorption of pump radiation. Its broad spectral emission band 1023-1060 nm applies to short pulses lasers.
Description
Cas'Tech Class
Parameters
Download

Introduction

Ytterbium doped Potassium Gadolinium Tungstate (Yb:KGd(WO4)2 or Yb:KGW) is an excellent laser gain material which has important advantages over the widely used Nd3+ doped materials. Its broad spectral emission band 1023-1060 nm allows the generation of short (ps or fs) laser pulses. Its wide absorption spectrum at 980 nm and high absorption of pump radiation allow an efficient use of diode laser pumping. Compared with YAG used as hosts for Yb3+, KGW has the advantage of larger absorption cross section, which decreases the minimum pump intensity necessary to achieve transparency in the quasi-two-level system of ytterbium.

CASTECH's Yb: KGW is featured by

  • High absorption coefficient @ 981nm
  • High stimulated emission cross section
  • Low laser threshold Extremely low quantum defect
  • Broad polarized output at 1023–1060 nm
  • High slope efficiency with diode pumping
  • High Yb doping concentration

 

Table 1. Basic Properties

Crystal Structure

Monoclinic

Point Group 

C2/c

Lattice Parameter

a = 8.09 Å, b = 10.43 Å, c = 7.588Å, β = 94.4°

Refractive Index, at 1067 nm 

ng = 2.033, np = 2.037, nm = 1.986

Melting Point

1075 ℃

Mohs Hardness

5

Density

7.27 g/cm3

Thermal Conductivity at 373 K

K[100] = 0.026 W/m/K, K[010] = 0.038 W/m/K; 

K[001] = 0.034 W/m/K

Thermal Expansion Coefficients at 373 K

α[100] = 4 × 10-6 /K, α[010] = 1.6 × 10-6 /K, 

α[001] = 8.5 × 10-6 /K

Lasing Wavelength

1023-1060 nm

Absorption Band

981 nm (FWHM 3.7 nm)

Fluorescent Lifetime

600 μs (5% doping)

 

 

 Table 2. Specifications

Orientation

[010]

Standard Dopant Concentration

Yb: 5 atm %

Maximum Length

50 mm

Dimensional Tolerances

Diameter: ±0.1mm 

Length: ±0.5 mm

Surface Quality (Scratch/Dig)

20/10 to MIL-PRF-13830B

Flatness

 λ/6 @633 nm

Parallelism

20 arc sec

Perpendicularity

≦ 15 arc min

Coating

AR-1030/980 nm,

R < 0.2% @1030 nm, R < 0.5% @980 nm.

Other coatings are available upon request.

 

Previous page
1

Related Products

Inquiry List

Product information

Product serial number
Thumbnail
Name of product
Retail price
Expected unit price
*Order quantity
Operation
Product serial number:
Yb:KGW - Ytterbium Doped Potassium Gadolinum Tungstate
Retail price: 0.0
* Expected unit price
*Order quantity
-+
Remove

Contact information

Basic information
Method of contact and profession
Company information

Add Other Product X

Product categories:
All products
Selected 0 Each
castech
Customer message

Copyright© CASTECH Inc. all rights reserved   Min ICP No. 06000911

Search 

搜索
Search