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LBO crystal, Lithium Triborate, LiB3O5, is a nonlinear optical crystal. For frequency doubling (SHG) / tripling (THG) of Nd:YAG, Nd:YLF, Nd:YVO4 lasers, it is one of the most useful nonlinear optical materials in ultraviolet and visible laser applications.

Unique features of LBO crystal:

  • Broad transparency range from 160nm to 2600nm; SHG range from 550nm to 2600nm.
  • High optical homogeneity ( dn = 10-6/cm) and free of inclusion.
  • Relatively large effective SHG coefficient. (about three times that of KDP)
  • Excellent for high power and stable second-harmonic generation. (minimal thermal lensing compared to KTP)
  • High damage threshold. (18.9 GW/cm2 for a 1.3ns laser at 1053nm;25 GW/cm2 for a 10 ns laser at 1064 nm)
  • 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.

Applications:

  • Frequency doubling (SHG) and tripling (THG) of high power pulsed of Nd:YAG , Nd:YVO4, Nd:YLF, Ti:Sapphire and Dye lasers.
  • Optical parametric amplifiers (OPA) and oscillators (OPO) of both Type 1 and Type 2 phase-matching pumped by Excimer lasers and harmonics of Nd:YAG lasers.
  • Non-critical phase-matching (NCPM) for SHG 1064nm of laser.

 

Specification
Dimension tolerance: (W +/- 0.1 mm) x (H +/- 0.1 mm) x (L + 0.2 mm/-0.1mm)
Flatness: l/8 @633nm
Clear aperture: > 90% central area Inspected by 10mW green laser no visible    scattering paths or centres are seen
Surface quality: 10/5 Scratch/Dig per MIL-O-13830A
Parallelism: <20 arcsec
Perpendicularity: <5 arcmin
Angle tolerance : Dq< +/-0.5°, Df< +/- 0.5°
AR coating:
   (SHG):
R< 0.25% at 1064nm and R<0.4% at 532 nm
   (THG): R< 0.6% at 1064nm & R<0.4% at 532 nm & R<0.5% at 355 nm
Coat damage threshold: >500MW/cm2

 

S-KTP Super Potassium Titanyl Phosphate(S-KTP) is a positive biaxial crystal, with the principal axes X, Y, and Z (nz>ny>nx ) parallel to the crystallographic axes a, b, and c, respectively.

Large nonlinear optical coefficient.
Wide angular bandwidth and small walk-off angle.
Broad temperature and spectral bandwidth.
High thermal conductivity.

Specification
Dimension tolerance: +/-0.1mm
Wavefront distortion: < /8 @633nm
Surface quality: Scratch/Dig:10/5
Parallelism: better than 30 arc sec
Perpendicularity: better than 30 arc min
Angle tolerance: Dq< 0.5° Df< 0.5°
AR coating: AR coatings
Clear aperture: >90% central area
Transmitting wave front distortion: less than /8 @ 633nm

Advantage:
Large nonlinear optical and electro-optical coefficients
Wide angular bandwidth and small walk-off angle
Broad temperature and spectral bandwidth
Low dielectric constants, loss tangent and ionic conductivities (much less than that of KTP)
High damage threshold
Lower absorption and high transmission in the 3-4 ¦Ìm spectrum range than KTP
Highly resistant to high intensity laser radiation

KTA Crystal, is an excellent nonlinear optical crystal for Optical Parametric Oscillation (OPO) Application. OPO devices based on KTAs are reliable, solid state sources of tunable laser radiation exhibiting energy conversion efficiencies above 50%. In addition KTA has a very high damage threshold.

In comparison to KTP, KTA crystals feature large non-linear optical and electro-optical coefficients and have significantly reduced absorption in the 2.0 - 5.0 m range. Its low dielectric constants, low loss tangent and ionic conductivities are orders of magnitude less than that of KTP.

Specification
Dimension tolerance: +/-0.1mm
Flatness: <l/8 @633nm
Surface quality: Scratch/Dig:10/5
Parallelism: better than 30 arc sec
Perpendicularity: better than 30 arc min
Angle tolerance: Dq< 0.5° Df< 0.5°
AR coating: AR coatings
Clear aperture: >90% central area
Transmitting wave front distortion: less than l/8 @ 633nm

Advantage:
Large nonlinear optical and electro-optical coefficients
Wide angular bandwidth and small walk-off angle
Broad temperature and spectral bandwidth
Low dielectric constants, loss tangent and ionic conductivities (much less than that of KTP)
High damage threshold
Lower absorption and high transmission in the 3-4 ¦Ìm spectrum range than KTP
Highly resistant to high intensity laser radiation

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