Crystal

◆Laser Crystal
Nd: YVO4

Features:
Low lasing threshold and high slope efficiency
High absorption over a wide pumping wavelength bandwidth

Large stimulated emission cross-section at lasing wavelength

Optically uniaxial and large birefringence emits polarized laser

Specifications

Nd: Dopant Level (atm% )

0.1 % - 3.0 %

Wavefront Distortion

< l/8 at 633 nm

Scattering Sites

invisible, probed with a He-Ne laser

Orientation

±0.5 deg.

Dimensional Tolerance

±0.1 mm

End-faces Configuration

Plano/Plano

Surface quality

10/5 Scratch/Dig per MIL-O-13830B

Flatness

l/10 at 633 nm

Clear Aperture

> Central 90%

Parallelism

< 10 arc sec.

Intrinsic Loss

< 0.1% cm-1

The size,  wavelength and coating are available upon request.

Nd:YAG

Features:
Low Loss at 1.06 mm, High Optical Quality
Good Mechanical and Thermal Properties
High Gain, Low Threshold, High Efficiency,

Specifications

Doping(atm%):

0.9%~ 1.1%

Orientation:

<111> crystalline direction

Wavefront distortion:

l/8 per inch @ 633 nm

Extinction Ratio:

>28dB

Dimension Tolerances

Rods with diameter: +/-0.025 mm , Length:+/-0.5 mm

Surface quality:

10/5 Scratch / Dig per MIL-O-1380A

Parallelism:

< 10 arc seconds

Perpendicularity:

< 5 arc minutes

Clear Aperture:

>90%

Flatness:

<l/10 @ 633 nm

chamfer:

<0.1 mm @ 45 deg.

Barrel Finish:

50-80 micro-inch (RMS) ,

The size,  wavelength and coating are available upon request.

Nd : GdV04

Features:
larger absorption and emission cross section
high thermal conductivity.
high slope efficiency or optical conversion efficiency
good physical and mechanical properties

Specifications

Nd: Doping(atm%):

0.1% ~3 %

Wavefront Distortion

< l/8 at 633 nm

Scattering Sites

invisible, probed with a He-Ne laser

Orientation

+/-0.5degree

Dimensional Tolerance

+0.1/-0.1mm

Surface quality

10/5 Scratch/Dig per MIL-O-13830B

Flatness

l/10 at 633 nm

Clear Aperture

> Central 90%

Parallelism

< 10 arc sec.

The size,  wavelength and coating are available upon request.

◆Q-switch Crystal
Cr:YAG

Features:

ideal material for passive Q-switching lasers
high damage threshold of 500-1000 MW/cm2
outstandingly suited to replace LiF and Dye which are commonly used for passive Q-switching
low cost and reduced system size and weight.

Specifications

Formula

Cr4+:Y3Al5O12

Crystal Structure

Cubic Garnet

Dopant Level

0.5 mol% ~ 3 mol%

Thermal conductivity [W/m/K]

12.13

Hardness

8.5 (Mohs)

Damage Threshold

> 500 MW/cm2

Refractive Index

1.82 @ 1064 nm

The size,  wavelength and coating are available upon request.

◆Nonlinear Crystal
LBO

Features:
broad transparency range from 160nm to 2600nm
relatively large effective SHG coefficient (about three times that of KDP)
high damage threshold
wide acceptance angle and small walk-off
type I and type II non-critical phase matching (NCPM) in a wide wavelength range
spectral NCPM near 1300nm

Specifications

Crystal structure  Orthorhombic, Space group Pna21, Point group mm2

Lattice parameter

a=8.4473Å, b=7.3788Å , c=5.1395Å , Z=2

Melting point

About 834℃

Mohs hardness

6

Density

2.47 g/cm3

Thermal conductivity

3.5W/m/K

Thermal Expansion coefficient ax=10.8x10-5/K, ay= -8.8x10-5/K, az=3.4x10-5/K
Angle tolerance 6.54mrad-cm    (φ, Type I,1064 SHG)
7.5°C-cm   (Type II,1064 SHG)
The size,  wavelength and coating are available upon request.

KTP

Features:      
Large nonlinear optical coefficient
Wide angular bandwidth and small walk-off angle
Broad temperature and spectral bandwidth
High electro-optic coefficient and low dielectric constant
Nonhydroscopic, chemically and mechanically stable

Specifications

Transmitting wavefront distortion  less than l/4 @ 633 nm

Dimension tolerance

(W ± 0.1 mm) x (H ± 0.1 mm) x (L + 0.2 mm/-0.1 mm)

Clear aperture

 > 90% central area

Flatness

 l/8 @ 633 nm

Scratch/Dig code

10/5 to MIL-O-13830A

Parallelism

better than 20 arc seconds

Perpendicularity 5 arc minutes
Angle tolerance Dθ < ±0.5°, Dф < ± 0.5°
Chip ≤0.1 mm
The size,  wavelength and coating are available upon request.

BBO

 

Features:
Broad phase matchable range from 409.6 nm to 3500 nm
Wide transmission region from 190 nm to 3500 nm
Large effective second-harmonic-generation (SHG) coefficient
 High damage threshold, wide temperature-bandwidth of about 55°C

Specifications

Wavefront distortion

less than l/8 @ 633 nm

Dimension tolerance

(W ± 0.1 mm) x (H ± 0.1 mm) x (L + 0.2 mm/-0.1 mm)

Clear aperture

> 90% central area

Flatness

l/8 @ 633 nm

Scratch/Dig code

10/5 to MIL-O-13830A

Parallelism

better than 20 arc seconds

Perpendicularity

5 arc minutes

Angle tolerance

Dθ  < ± 0.3°, Dф< ±0.3°