1. Pockels Cells
Based on the electro-optic impact, when the used electric area acts upon the Pockels cell crystal (electro-optic crystal), the Pockels cell crystal (electro-optic crystal) is like a wave plate whose phase hold-up is associated with the applied electric area. The polarization state of the outgoing light from the Pockels cell crystal will transform to ensure that the strength and amplitude of the outbound light from the analyzer are regulated, which is electro-optic modulation, and also the modulation gadget is called a Pockels cell.
2. Pockels cells crystal
The crystals that generate the electro-optical result are called Pockels cells crystals, that is, electro-optical crystals. They each have their benefits. Presently, the main Pockels cell crystals on the market consist of BBO crystals, DKDP crystals, KTP crystals, as well as LN (LiNbO3) crystals.
(1) BBO crystal
Summary: BBO crystal, also referred to as barium metaborate crystal, chemical formula BaB2O4, is an electro-optic and also nonlinear crystal with exceptional comprehensive residential properties.
Functions: BBO crystal has an extremely wide light transmission variety, extremely low absorption coefficient, and also weak piezoelectric ringing effect; compared with various other electro-optical inflection crystals, it has a higher extinction proportion, a bigger phase matching angle, and also High resistance to light damage threshold, broadband temperature level matching and outstanding optical harmony are beneficial to boost the stability of laser outcome power, particularly in the regularity triple of Nd: YAG laser has a wide range of applications.
Application: It has a variety of associated areas in the third, 4th and 5th harmonics of Nd: YAG lasers (355nm, 266nm and 213nm, respectively), the second and also 3rd harmonics of Ti: Sapphire amplifiers (400nm and also 266.7 nm) and various other related areas. Application. It can additionally be related to OPO arrangements, optical parametric oscillators, and also electro-optical applications from near-infrared to deep ultraviolet.
(2) DKDP crystal
Description: DKDP (KD * P) crystal, also known as potassium deuterium phosphate crystal, chemical formula KD2PO4, is a comprehensive electro-optical crystal product.
Features: KDP and also DKDP (KD * P) crystals have the advantages of high resistance to light damage threshold, high electro-optic coefficient, good ecological resistance, small design, and comfort and modification.
Application: It is extensively used in state-of-the-art fields such as laser frequency conversion, electro-optic modulation as well as electro-optic rapid changing, and can be made use of to produce inexpensive and massive finished nonlinear components appropriate for dual frequency (SHG) as well as three-way regularity (THG) fields.
(3) KTP crystal
Summary: KTP crystal, likewise called potassium titanium phosphate crystal, whose chemical formula is KTiOPO4, is a crystal product with superb nonlinear as well as electro-optical properties.
Attributes: KTP has the residential or commercial properties of high electro-optical coefficient as well as low dielectric continuous, which can operate at high frequency and be made use of as an electro-optical Q-switched crystal. KTP additionally has excellent regularity increasing efficiency:
- Big nonlinear coefficient
- No declination Angle
- High optical damages limit
- Little change in stage matching conditions with temperature level
Application: used in medium and also tiny power Nd: YAG and Nd: YVO4 laser output 1064-532nm laser regularity doubling crystal materials.
(4) LN (LiNbO3) crystals
Summary: LiNbO3 crystal, also called lithium niobate crystal, referred to as LN crystal, is an electro-optical crystal with exceptional thorough efficiency.
Features: Compared to other electro-optical crystals, the crystal has the advantages of little dimension, challenging decidualization, huge electro-optical coefficient, large openness array, high electro-optical effectiveness, reduced absorption loss and also reduced damages threshold.
Application: It has a variety of applications in related fields, such as electro-optic modulators and Q-switches in Nd: YAG, Nd: YLF as well as Ti: Sapphire lasers and modulators in fiber optics. At the same time, it can be utilized in 532nm, 1064nm as well as 2940nm lasers, with frequency doubling above 1000 nm wavelength as well as optical criterion amplification of 1064nm pump light.
