1. Pockels Cell
Based on the electro-optic impact, when the applied electric area acts on the Pockels cell crystal (electro-optic crystal), the Pockels cell crystal (electro-optic crystal) is like a wave plate whose stage delay is connected to the used electrical field. The polarization state of the outbound light from the Pockels cell crystal will certainly alter so that the strength and also amplitude of the outbound light from the analyzer are regulated, which is electro-optic inflection, as well as the inflection tool is called a Pockels cell.
2. Pockels cell crystal
The crystals that create the electro-optical impact are called Pockels cell crystals, that is, electro-optical crystals. They each have their advantages. Currently, the major Pockels cell crystals on the market include BBO crystals, DKDP crystals, KTP crystals, and also LN (LiNbO3) crystals.
(1) BBO crystal
Description: BBO crystal, likewise known as barium metaborate crystal, with chemical formula BaB2O4, is an electro-optic and nonlinear crystal with exceptional thorough properties.
Attributes: BBO crystal has a very vast light transmission variety, very low absorption coefficient, and weak piezoelectric ringing impact; compared to other electro-optical inflection crystals, it has a greater termination ratio, a bigger phase matching angle, as well as High resistance to light damage threshold, broadband temperature level matching as well as outstanding optical uniformity are beneficial to boost the stability of laser output power, particularly in the frequency triple of Nd: YAG laser has a variety of applications.
Application: It has a vast array of relevant fields in the 3rd, 4th, and also 5th harmonics of Nd: YAG lasers (355nm, 266nm as well as 213nm, specifically), the 2nd as well as third harmonics of Ti: Sapphire amplifiers (400nm as well as 266.7 nm) and other related areas. Application. It can also be put on OPO setups, optical parametric oscillators, as well as electro-optical applications from near-infrared to deep ultraviolet.
(2) DKDP crystal
Description: DKDP (KD*P) crystal, additionally referred to as potassium deuterium phosphate crystal, chemical formula KD2PO4, is a comprehensive electro-optical crystal item.
Attributes: KDP and also DKDP (KD*P) crystals have the advantages of high resistance to light damages limit, high electro-optic coefficient, great environmental resistance, compact style, and also comfort as well as modification.
Application: It is extensively used in modern areas such as laser regularity conversion, electro-optic inflection and electro-optic fast switching, can be used to produce inexpensive and also large finished nonlinear components ideal for double frequency (SHG) as well as triple regularity (THG) fields.
(3) KTP crystal
Summary: KTP crystal, additionally referred to as potassium titanium phosphate crystal, whose chemical formula is KTiOPO4, is a crystal item with outstanding nonlinear and electro-optical residential or commercial properties.
Characteristics: KTP has homes of high electro-optical coefficient and low dielectric consistency, which can work at high frequency and also be utilized as an electro-optical Q-switched crystal. KTP likewise has superb regularity doubling performance:
- – Big nonlinear coefficient
- – No declination Angle
- – High optical damages limit
- – Little adjustment in phase matching conditions with temperature
Application: utilized in tool and also small power Nd: YAG as well as Nd: YVO4 laser outcome 1064-532nm laser frequency increasing crystal products.
(4) LN (LiNbO3) crystals
Description: LiNbO3 crystal, also called lithium niobate crystal, described as LN crystal, is an electro-optical crystal with superb thorough efficiency.
Features: Compared with various other electro-optical crystals, the crystal has the advantages of little size, hard decidualization, huge electro-optical coefficient, wide openness range, high electro-optical performance, reduced absorption loss, and reduced damage limit.
Application: It has a large range of applications in associated fields, such as electro-optic modulators and also Q-switches in Nd: YAG, Nd: YLF and also Ti: Sapphire lasers and also modulators in optical fibers. At the same time, it can be used in 532nm, 1064nm and 2940nm lasers, with regularity increasing above 1000 nm wavelength and also optical specification amplification of 1064nm pump light.
