Laser Crystal-YAG Crystal

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

 0.9%~ 1.1%

 Orientation

 <111> crystalline direction

 l/8 per inch @ 633 nm

 Extinction Ratio

 >28dB

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

 10/5 Scratch / Dig per MIL-O-1380A

 Parallelism

 < 10 arc seconds

 Perpendicularity

 < 5 arc minutes

 Clear Aperture

 >90%

 Flatness

 <l/10 @ 633 nm

Laser Crystal-Nd:YV04

• 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

 0.1 % - 3.0 %

 Wavefront Distortion

 < l/8 at 633 nm

 invisible, probed with a He-Ne laser

 0.5 deg.

 0.1 mm

 Plano/Plano

 Flatness

 l/10 at 633 nm

 Clear Aperture

 > Central 90%

 Parallelism

 < 10 arc sec.

 < 0.1% cm-1

Laser Crystal-Nd:GdV04

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

 0.1%~3 %

 Wavefront Distortion

 < l/8 at 633 nm

 invisible, probed with a He-Ne laser

 Orientation

 +/-0.5degree

 +0.1/-0.1mm

 10/5 Scratch/Dig per MIL-O-13830B

 Flatness

 l/10 at 633 nm

 Clear Aperture

 > Central 90%

 Parallelism

 < 10 arc sec.

Q-switch Crystal-Cr:YAG

• 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.

 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

Nonliner Crystal-LBO

• 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

 Orthorhombic, Space group Pna21, Point group mm2

 Lattice parameter

 a=8.4473, b=7.3788,c=5.1395,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

Nonliner Crystal-BBO

• 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 55C

 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

 D < 0.3, D< 0.3

Nonliner Crystal-KTP

• 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

 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

 1/8 @ 633 nm

 Scratch/Dig code

 10/5 to MIL-O-13830A

 Parallelism

 better than 20 arc seconds

 Perpendicularity

 5 arc minutes