Potassium Titanyle Arsenate Crystal (KTA Crystal) Description

Potassium Titanyle Arsenate (KTiOAsO4), commonly known as KTA, is a nonlinear optical crystal renowned for its excellent electro-optic properties and wide transparency range extending from the visible to the mid-infrared region (0.5 to 5.3 micrometers). KTA crystals are characterized by a high damage threshold, low dielectric constant, and good thermal stability, making them ideal for frequency conversion applications such as optical parametric oscillation, second harmonic generation, and sum-frequency generation. Additionally, KTA's high nonlinearity and low absorption losses contribute to its efficiency in laser systems and other advanced photonic applications.

Potassium Titanyle Arsenate Crystal (KTA Crystal) Specifications

Potassium Titanyle Arsenate Crystal (KTA Crystal) Features:

Large nonlinear optical coefficients

Wide angular bandwidth and small walk-off angle

Broad temperature and spectral bandwidth

Large electro-optic coefficients

Lower absorption in the 3-4 μm range than KTP.

Nonhydroscopic, chemically and mechanically stable

High thermal conductivity

High damage threshold

Potassium Titanyle Arsenate Crystal (KTA Crystal) Properties

a.Linear Optical Properties:

b. Nonlinear Optical Properties:

Potassium Titanyle Arsenate Crystal (KTA Crystal) Applications

1. Optical Parametric Oscillators (OPOs): KTA is commonly used in OPOs for frequency conversion to generate tunable laser light from the visible to the mid-infrared range.

2. Second Harmonic Generation (SHG): It is utilized for doubling the frequency of laser light, particularly in applications requiring high power and efficiency.

3. Sum-Frequency Generation (SFG): KTA is employed in SFG processes to combine two different frequencies of light to produce a third frequency, expanding the range of wavelengths available from laser sources.

4. Difference Frequency Generation (DFG): KTA is used to generate new wavelengths by mixing two frequencies and subtracting one from the other, useful in spectroscopy and other precision measurement techniques.

5. Electro-Optic Modulators: Due to its excellent electro-optic properties, KTA is used in devices that modulate the phase, frequency, or amplitude of light in advanced communication systems.

6. Laser Systems: KTA crystals are integrated into various laser systems to enhance performance and efficiency, particularly in medical, military, and industrial applications.

Potassium Titanyle Arsenate Crystal (KTA Crystal) Packing

Our products are packaged in customized cartons of various sizes based on the material dimensions. Small items are securely packed in PP boxes, while larger items are placed in custom wooden crates. We ensure strict adherence to packaging customization and the use of appropriate cushioning materials to provide optimal protection during transportation.

FAQs

Q1: What is non‑critical phase matching (NCPM) in KTA?

Non‑critical phase matching occurs when the pump beam propagates along a principal axis of the crystal, typically with θ = 90°. For KTA pumped at 1064 nm, NCPM produces an idler near 3.5 μm. The main advantages are the elimination of spatial walk‑off, large angular and temperature acceptance bandwidths, and the ability to use longer crystals for higher energy or average power scaling.

Q2: What is the optical damage threshold of KTA?

At 1064 nm with 10 ns pulses at 10 Hz, the damage threshold of bulk KTA exceeds 500 MW/cm². At 532 nm, it is lower, around 300 ± 30 MW/cm² under similar pulse conditions. In practice, the overall damage threshold of an AR‑coated component is often limited by the coating rather than the crystal itself.

Q3: What is the transparency range of KTA? Can it be used for visible light?

KTA transmits from 350 nm to 5300 nm (0.35–5.3 μm). It does transmit visible wavelengths such as 532 nm, but the damage threshold is lower there. The crystal is not suitable for deep UV below 350 nm, but its performance in the mid‑IR up to 5.3 μm is excellent.