V YAG Q Switch Crystals

V:YAG (Yttrium-Aluminum Garnet doped with three-valence vanadium V3+ ) is a relatively new crystal material of saturable absorbers and passive Q-switch in the spectral range from 1064 to 1440 nm, primarily because of extremely high ground-state absorption cross section.

Product Details


Description

V:YAG (Yttrium-Aluminum Garnet doped with three-valence vanadium V3+) is a relatively new crystal material of saturable absorbers and passive Q-switch in the spectral range from 1064 to 1440 nm, primarily because of extremely high ground-state absorption cross section and negligible excited-state absorption around the absorption peak at about 1300 nm. This material, revealing excellent optical, mechanical, and thermal properties, can typically be grown by the Czochralski method. V:YAG crystals have been applied for a variety of active media such as Nd:YAG, Nd:YAP, Nd:KGW, Nd:YVO4 to achieve compact and good-performance passive Q-switching lasers.

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Features

•  Extremely high ground state absorption

•  Negligible excited state absorption

•  High contrast of Q-switch

•  Good optical, mechanical, and thermal properties

•  UV resistant and high High damage threshold(>500MW/cm2)                                                             


Applications

•  Q-switching and model-locking for Nd:YAG lasers 

•  Q-switching and model-locking for Nd:YAP lasers

•  Q-switching and model-locking for Nd:KGW lasers

•  Q-switching and model-locking for Nd:YVO4 lasers


Parameters

Property

Value

Chemical formula 

V3+:Y3Al5O12

Crystal structure

cubic - la3d

Orientation

<100> <+/-0.5°

Transmittance

30%-97%

Optical density

0.1-0.8


Specifications

Property

Value

Atomic transition structure

Two-level system

Recovery time

5~22 ×10-22 s

Concentrations

(0.05~0.35) wt%

Absorption cross-section

7.3×10-18 cm2 (@1340 nm)

Emission bandwidth

1000-1450 nm

Central absorption wavelength

1300 nm

Coatings

Standard coating is AR with R < 0.2% (@1340 nm)


Polishing Specification

Property

Value

Orientation Tolerence

< 0.5°

Thickness/Diameter Tolerance

±0.05 mm

Surface Flatness

<λ/8@632 nm

Wavefront Distortion

<λ/4@632 nm

Surface Quality

10/5

Parallel

30〞

Perpendicular

15ˊ

Clear Aperture

>90%

Chamfer

<0.2×45°


Standard products

Initial transmission @1064nm

Dimensions,mm

Coatings

Surface   Flatness

Surface Quality

(scratch/dig)

T0=30%

dia 5



AR≤0.2% @1064nm


 

<λ/8@632 nm

10/5

3x3

5x5

T0=40%

dia 5

3x3

5x5

T0=50%

dia 5

3x3

5x5

T0=60%

dia 5

3x3

5x5

T0=70%

dia 5

3x3

5x5

T0=80%

dia 5

3x3

5x5

T0=85%

dia 5

3x3

5x5

T0=90%

dia 5

3x3

5x5

T0=95%

dia 5

3x3

5x5

T0=97%

dia 5

3x3

5x5


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