Based on the electro-optic result, when the used electrical area acts upon the Pockels cell crystal (electro-optic crystal), the Pockels cell crystal (electro-optic crystal) resembles a wave plate whose phase delay is associated with the applied electrical field. The polarization state of the outgoing light from the Pockels cell crystal will certainly change to make sure that the strength and amplitude of the outbound light from the analyzer are modulated, which is electro-optic inflection, and the modulation tool is called a Pockels cell.
Pockels cells crystal
The crystals that produce the electro-optical impact are called Pockels cell crystals, that is, electro-optical crystals. They each have their advantages. Presently, the major Pockels cell crystals on the market include BBO crystals, DKDP crystals, KTP crystals, and also LN (LiNbO3) crystals.
(1) BBO pockels cell crystal
Summary: BBO crystal, also referred to as barium metaborate crystal, with chemical formula BaB2O4, is an electro-optic as well as nonlinear crystal with exceptional comprehensive homes.
Attributes: BBO crystal has an extremely wide light transmission range, very reduced absorption coefficient, as well a weak piezoelectric buzzing impact; compared with various other electro-optical modulation crystals, it has a higher extinction ratio, a bigger stage matching angle, and High resistance to light damages threshold, broadband temperature level matching as well as excellent optical harmony are beneficial to enhance the stability of laser outcome power, especially in the frequency triple of Nd: YAG laser has a wide variety of applications.
Application: It has a vast array of associated areas in the 3rd, 4th as well as 5th harmonics of Nd: YAG lasers (355nm, 266nm as well as 213nm, specifically), the second and also 3rd harmonics of Ti: Sapphire amplifiers (400nm and 266.7 nm) and also other related areas. Application. It can also be applied to OPO configurations, optical parametric oscillators, and electro-optical applications from near-infrared to deep ultraviolet.
(2) DKDP pockels cell crystal
Summary: DKDP (KD*P) crystal, likewise referred to as potassium deuterium phosphate crystal, chemical formula KD2PO4, is a comprehensive electro-optical crystal product.
Functions: KDP and also DKDP (KD*P) crystals have the advantages of high resistance to light damage threshold, high electro-optic coefficient, good ecological tolerance, compact style, as well as convenience, and also change.
Application: It is commonly used in state-of-the-art fields such as laser frequency conversion, electro-optic modulation, and electro-optic rapid switching, and can be used to make affordable as well as massive ended-up nonlinear components appropriate for dual frequency (SHG) and also three-way frequency (THG) areas.
(3) KTP pockels cell crystal
Description: KTP crystal, likewise known as potassium titanium phosphate crystal, whose chemical formula is KTiOPO4, is a crystal item with excellent nonlinear as well as electro-optical properties.
Qualities: KTP has homes of high electro-optical coefficient as well as low dielectric consistency, which can work at high frequency and be used as an electro-optical Q-switched crystal. KTP also has excellent regularity increasing performance:
- Big nonlinear coefficient
- No declination Angle
- High optical damage threshold
- Little modification in stage matching problems with temperature level
Application: utilized in medium and also small power Nd: YAG and Nd: YVO4 laser result 1064-532nm laser regularity doubling crystal products.
(4) LN (LiNbO3) pockels cell crystal
Summary: LiNbO3 crystal, likewise referred to as lithium niobate crystal, described as LN crystal, is an electro-optical crystal with exceptional extensive performance.
Qualities: Compared with various other electro-optical crystals, the crystal has the advantages of little size, challenging decidualization, huge electro-optical coefficient, vast transparency array, high electro-optical efficiency, reduced absorption loss, and low damage threshold.
Application: It has a large range of applications in associated areas, 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 used in 532nm, 1064nm, and 2940nm lasers, with frequency doubling above 1000 nm wavelength as well as optical parameter amplification of 1064nm pump light.