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Potassium Titanyl Phosphate – KTP Crystals

Potassium Titanyl Phosphate – KTP Crystals

KTP (KTiOPO4) is a nonlinear optical crystal, which possesses excellent nonlinear, electrooptical and acousto­optical properties. A combination of high nonlinear coefficient, wide transparency range, and broad angular as well as thermal acceptance makes KTP very attractive for different nonlinear optical and wavequide applications.

KTP crystal is a standard with the parameters mostly used in extracavity configuration when the single pass through the crystal is required.

KTP crystals are optimised for SHG intracavity configuration in low peak power CW lasers. Because of large number of passes through the crystal low insertion losses and high homogeneity are essential for crystal efficiency. The special highest quality material selected by SHG efficiency mapping of each crystal, fine surface polishing and dual band AR coatings with very low losses allow EKSMA OPTICS to produce KTP crystals suitable for infracavity SHG application.

Fig. 1 represents Type 2 SHG tuning curve of KTPcrystal in x-y plane. In x-y plane the slope ∂ (∆k)/ ∂θ is small. This corresponds to quasi-angular noncritical phase-matching that ensures the double advantage of a large acceptance angle and small walk off. In x-z plane, the slope ∂ (∆k)/ ∂λ is almost zero for wavelengths in the range 1.5–2.5 µm and this corresponds to quasi-wavelength noncritical phase-matching, which ensures a large spectral acceptance. Wavelength noncritical phase-matching is highly desirable for frequency conversion of short pulses.

As a lasing material for OPG, OPA or OPO the KTP can most usefully be pumped by Nd lasers and their second harmonic or any other source with intermediate wavelength, such as a dye laser (near 600 nm). Fig.3 and Fig.4 show the phasematching angles for OPO/OPA pumped at 532 nm in x-y and x-z plane respectively.

EKSMA OPTICS offers:

  • KTP crystal size up to 10×10×20 mm 
  • Singleband and dualband AR and BBAR coatings
  • Standard and customised mounts and housings
  • Technical consulting

EKSMA OPTICS guarantees:

  • Accurate quality control
  • One month customer's satisfaction term
  • Conformity of KTP crystal specifications to the highest standards
  • Attractive prices
  • Fast delivery
Delivery: 2 business days
Code Size, mm θ φ Coating Application Item price, USD In stock Add to cart
KTP-401 3x3x5 90 23.5 AR/AR @ 1064+532 nm SHG @ 1064 nm, Type 2 95.- In stock Add to cart
KTP-402 3x3x10 90 23.5 AR/AR @ 1064+532 nm SHG @ 1064 nm, Type 2 140.- In stock Add to cart
KTP-403 4x4x6 90 23.5 AR/AR @ 1064+532 nm SHG @ 1064 nm, Type 2 145.- In stock Add to cart
KTP-404 7x7x9 90 23.5 AR/AR @ 1064+532 nm SHG @ 1064 nm, Type 2 780.- In stock Add to cart
All prices are FCA Vilnius.
Prices are valid only for direct orders. For orders via distributors contact them directly.
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