What is lithium niobate used for?
Lithium niobate is used extensively in the telecommunications market, e.g. in mobile telephones and optical modulators. It is the material of choice for the manufacture of surface acoustic wave devices.
Is Lithium niobate a uniaxial crystal?
LiNbO3 (Lithium niobate, LN) crystal is a negative uniaxial crystal and one of the most thoroughly characterized optical materials.
Is Lithium niobate a piezoelectric?
Lithium niobate (LiNbO3, LN) crystal is a multi-functional material with favorable piezoelectric, nonlinear optical and electro-optic properties. The maximum RE and thickness shear (TS) modes electromechanical coupling factors are obtained to be 47.6% and 68.5% for the Yx/25° and Yx/167° crystal cuts, respectively.
Is LiNbO3 a ferroelectric?
LiNbO3 is a ferroelectric material which has the highest Curie temperature of about 1210 ºC up to now and the largest spontaneous polarization of about 0.70 C/m2 at room temperature.
Is Lithium niobate conductive?
At the low temperature, the conductivity is attributed to polarons conduction. According to Schirmer [39], three types of small polarons are present in the lithium niobate.
Is Lithium niobate a ceramic?
Nitta [24] prepared the sodium-lithium niobate ceramic by the solid-state method. Solid solution with LiNbO3 can exhibit piezoelectric, ferroelectric and electro-optic behaviors [25]; sol–gel processing [25], [26] has become popular for producing ceramic materials. LiNbO3 (LN) is isomorphous with LiTaO3 (LT).
Why is LiNbO3 preferred for modulator?
Lithium niobate (LiNbO3, LN) has been the preferred material for electro-optic modulators, thanks to its high electro-optic coefficient (r33 = 31 pm/V), wide transmission window (340 ~ 4600 nm) and low optical loss at telecom wavelengths.
How does an AOM work?
An acousto-optic modulator (AOM) is a device which can be used for controlling the power of a laser beam with an electrical drive signal. A transducer generates a sound wave, at which a light beam is partially diffracted. The diffraction angle is exaggerated; it is normally only of the order of 1°.
Is Lithium niobate dielectric?
The AC conductivity sigma ( omega ) and dielectric constant epsilon ‘ of lithium niobate single crystals have been measured along the ferroelectric c-axis in the temperature range 77-700K and in the frequency region 0.1-100 kHz. The dielectric constant in this region also shows a strong frequency dispersion.
What is the other name of lithium niobate?
Lithium niobate is sometimes referred to by the brand name linobate. Lithium niobate is a colorless solid, and it is insoluble in water. It has a trigonal crystal system, which lacks inversion symmetry and displays ferroelectricity, the Pockels effect, the piezoelectric effect, photoelasticity and nonlinear optical polarizability.
What is periodically poled lithium niobate (PPLN)?
Periodically-poled lithium niobate (PPLN) is a domain-engineered lithium niobate crystal, used mainly for achieving quasi-phase-matching in nonlinear optics.
Can lithium niobate be grown on sapphire?
Thin-film lithium niobate (eg. for optical wave guides) can be grown on sapphire and other substrates, using the MOCVD process. The technology is known as Lithium Niobate-On-Insulator (LNOI). Nanoparticles of lithium niobate and niobium pentoxide can be produced at low temperature.
Can lithium niobate be used as a tweezer?
In the past few years lithium niobate is finding applications as a kind of electrostatic tweezers, an approach known as optoelectronic tweezers as the effect requires light excitation to take place.