1. Pockels Cells
Based on the electro-optic effect, when the used electric area acts upon the Pockels cell crystal (electro-optic crystal), the Pockels cell crystal (electro-optic crystal) resembles a wave plate whose stage hold-up is related to the used electric area. The polarization state of the outbound light from the Pockels cell crystal will alter to make sure that the strength and also amplitude of the outgoing light from the analyzer are regulated, which is electro-optic modulation, and also the inflection device is called a Pockels cell.
2. Pockels cell crystal
The crystals that generate the electro-optical effect are called Pockels cell crystals, that is, electro-optical crystals. They each have their benefits. Presently, the primary Pockels cell crystals on the market include BBO crystals, DKDP crystals, KTP crystals, as well as LN (LiNbO3) crystals.
(1) BBO crystal
Description: BBO electro optic crystal, likewise known as barium metaborate crystal, chemical formula BaB2O4, is an electro-optic and also nonlinear crystal with excellent detailed residential or commercial properties.
Attributes: BBO crystal has a very broad light transmission variety, extremely low absorption coefficient, as well as weak piezoelectric buzzing result; compared to various other electro-optical inflection crystals, it has a greater extinction proportion, a larger phase matching angle, and High resistance to light damages limit, broadband temperature matching and outstanding optical harmony are beneficial to boost the security of laser outcome power, particularly in the frequency triple of Nd: YAG laser has a wide variety of applications.
Application: It has a large range of related areas in the 3rd, 4th as well as fifth harmonics of Nd: YAG lasers (355nm, 266nm and also 213nm, respectively), the 2nd and also third harmonics of Ti: Sapphire amplifiers (400nm as well as 266.7 nm) and also various other associated fields. Application. It can additionally be related to OPO configurations, optical parametric oscillators, as well as electro-optical applications from near-infrared to deep ultraviolet.
(2) DKDP crystal
Description: DKDP (KD * P) crystal, also called potassium dideuterium phosphate crystal, chemical formula KD2PO4, is a detailed electro-optical crystal item.
Features: KDP and DKDP (KD * P) crystals have the advantages of high resistance to light damage threshold, high electro-optic coefficient, great ecological resistance, portable design, and also benefit as well as adjustment.
Application: It is commonly used in modern fields such as laser regularity conversion, electro-optic inflection as well as electro-optic fast changing, can be used to manufacture low-priced and large-scale ended up nonlinear components suitable for double regularity (SHG) and also triple regularity (THG) areas.
(3) KTP crystal
Description: KTP crystal, additionally referred to as potassium titanium phosphate crystal, whose chemical formula is KTiOPO4, is a crystal product with outstanding nonlinear and also electro-optical properties.
Qualities: KTP has the properties of high electro-optical coefficient and also reduced dielectric constant, which can work at high frequency as well as be made use of as an electro-optical Q-switched crystal. KTP also has exceptional frequency increasing efficiency:
- Large nonlinear coefficient
- No declination Angle
- High optical damages limit
- Little adjustment in phase matching conditions with temperature
Application: utilized in medium and small power Nd: YAG as well as Nd: YVO4 laser result 1064-532nm laser regularity doubling crystal products.
(4) LN (LiNbO3) crystal
Description: LiNbO3 crystal, also known as lithium niobate crystal, described as LN crystal, is an electro-optical crystal with outstanding detailed efficiency.
Characteristics: Compared to various other electro-optical crystals, the crystal has the advantages of small dimension, difficult decidualization, large electro-optical coefficient, broad transparency range, high electro-optical performance, low absorption loss and also reduced damages limit.
Application: It has a vast array of applications in related fields, such as electro-optic modulators as well as Q-switches in Nd: YAG, Nd: YLF and Ti: Sapphire lasers and modulators in optical fibers. At the same time, it can be utilized in 532nm, 1064nm and 2940nm lasers, with regularity doubling above 1000 nm wavelength and also optical criterion amplification of 1064nm pump light.
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