LBO

LBO

Keywords: Crystal, LBO, Lithium Triborate LiB3O5
Jan 28, 2021 View: 2232 Data Sheet

LBO (Lithium Triborate LiB3O5) is a nonlinear optical crystal ideally suitable for various nonlinear optical applications. LBO crystals combine wide transparency, moderately high nonlinear coupling, high damage threshold and good chemical and mechanical properties.

SRC Series LBO Crystals

LBO (Lithium Triborate LiB3O5) is a nonlinear optical crystal ideally suitable for various nonlinear optical applications. LBO crystals combine wide transparency, moderately high nonlinear coupling, high damage threshold and good chemical and mechanical properties.

Special Advantages of our LBO:

  • Super polished elements for excellent surface quality: roughness < 3Å RMS and scratch dig 2/1

  • Very low bulk absorption: up to 2ppm/cm @1064nm

  • Crystal size up to 50x50 mm and maximum length of 50 mm

  • Strict quality control

Our LBO features:

  • Wide transparency range (160nm – 2600nm)

  • Moderately high nonlinear coefficient

  • High damage threshold

  • Type I and II phase matching in a wide wavelength range

  • High optical homogeneity

  • Wide acceptance angle and small walk-off angle

Common Applications:

Second and third harmonic generation of high power diode pumped Nd:YAG and Nd:YLF lasers, Alexandrite, Ti:Sapphire, Dye lasers and ultrashort pulse lasers

Typical Specifications for LBO:

Apertures

Up to 50x50 mm2

Length

Up to 50 mm along x axis

Flatness

Up to λ/10 @1064nm

Roughness

<3Å RMS

Parallelism

Up to 5 arc sec.

Perpendicularity

Up to 5 arc min.

Scratch/Dig

2/1 up to 0/0 per custom demand

AR Coatings

Dual band R < 0.1%

Absorption Coefficient

     

Wave Front Distortion

λ/8 @633 nm

Laser induced Damage Threshold

800 MW/cm² @1064 nm
  500 MW/cm² @532 nm
  300 MW/cm² @355 nm
  For 10 ns pulses

Surface absorption performed @532nm on LBO crystal AR coated @1064/532nm:

Graph clearly highlights that surface absorption at 532nm performed on coated LBO Superpolished crystal (roughness <3Å) is about 4 times less absorbent than standard polished coated LBO crystal (roughness of ~10Å). Based on this difference, LBO Superpolished crystals made by us should exhibit longer lifetime.


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