CY0493 Potassium Titanyle Arsenate (KTA)

Catalog No.	CY0493
Length	0.1-30mm
Size	<151530mm
AR Coating	visible to 3300nm

Potassium Titanyle Arsenate (KTiOAsO4), or 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 and lower absorption in the 3-4 µm spectrum range than KTP.

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Description

Specification

KTA Crystals 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.

KTA Crystals Specification

Length	0.1-30mm
Size	<151530mm
AR-coating	visible to 3300nm
Service	Re-polishing, Re-coating
Delivery	10 working days for polished, 15 working days for AR-coated

KTA Crystals Specifications

Dimension tolerance:	±0.1mm
Flatness:	λ/8 @633nm
Surface quality: Scratch/Dig	10/5
Parallelism:	better than 30 arc sec.
Perpendicularity:	better than 30 arc min
Angle tolerance:	△< 0.5°,△< 0.5°
AR coating:	from visible to 3300 nm
Clear aperture:	>90% central area
Transmitting wave front distortion:	less than λ/8 @ 633nm

KTA crystals 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

KTA crystals Properties

a.Linear Optical Properties:

Transmitting Range	350 nm - 5500 nm
Refractive Indices: 1064nm 532nm	nx ny nz 1.7818 1.7866 1.8680 1.8264 1.8331 1.9310
Sellmeier Equations (l in μm)	nx2=1.90713+1.23522l2 /(l2-0.19692)-0.01025l2 ny2=2.15912+1.00099l2 /(l2-0.21844)-0.01096l2 nz2=2.14768+1.29559l2/(l2-0.22719)-0.01436l2
Thermo-optic Coefficients	dnx/dT=1.1x10-5/oC, dny/dT=1.3x10-5/oC dnz/dT=1.6x10-5/oC
Absorption Coefficient	a < 1% cm-1 @1064nm and 532nm

b. Nonlinear Optical Properties:

Phasematchable SHG Range	542 - 1800nm
Nonlinear Optical Coefficients	d31=2.8pm/v, d32=4.2pm/v, d33=16.2pm/v,d24=3.2pm/v, d15=2.3pm/v
Effective Nonlinearity Expressions	deff(II)= (d24-d15)sin2fsin2q-(d15sin2f+d24cos2f)sinq
Electro-optic Coefficients ( Low frequency )	r13= 11.5pm/V, r23=15.4pm/V, r33=37.5pm/V
Dielectric Constant	eeff=42

Applications of KTA crystals:

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 Packing

Our Potassium Titanyle Arsenate is carefully handled to prevent damage during storage and transportation and to preserve the quality of our product in its original condition.