Based upon the electro-optic effect, when the used electrical field acts on the Pockels cell crystal (electro-optic crystal), the Pockels cell crystal (electro-optic crystal) resembles a wave plate whose phase delay is connected to the applied electric area. The polarization state of the outgoing light from the Pockels cell crystal will certainly change so that the strength and amplitude of the outward bound light from the analyzer are modulated, which is electro-optic inflection. The inflection tool is called a Pockels cell.
Pockels cell crystal
The crystals that create the electro-optical effect are called Pockels cell crystals, that is, electro-optical crystals. They each have their advantages. Currently, the main Pockels cell crystals on the marketplace include BBO crystals, DKDP crystals, KTP crystals, and LN (LiNbO3) crystals.
- BBO crystal
Summary: BBO electro-optic crystal, likewise called barium metaborate crystal, with chemical formula BaB2O4, is an electro-optic and also nonlinear crystal with exceptionally detailed homes.
Attributes: BBO crystal has a very broad light transmission range, very low absorption coefficient, and weak piezoelectric buzzing impact; compared to other electro-optical inflection crystals, it has a greater extinction proportion, a larger stage matching angle, as well as High resistance to light damage limit, broadband temperature level matching and also superb optical harmony are beneficial to enhance the security of laser output power, particularly in the frequency triple of Nd: YAG laser has a variety of applications.
Application: It has a wide range of relevant areas in the 3rd, fourth, and fifth harmonics of Nd: YAG lasers (355nm, 266nm as well as 213nm, specifically), the 2nd as well as third harmonics of Ti: Sapphire amplifiers (400nm and 266.7 nm) as well as various other relevant areas. It can additionally be put on OPO configurations, optical parametric oscillators, and electro-optical applications from near-infrared to deep ultraviolet.
- DKDP crystal
Summary: DKDP (KD*P) crystal, referred to as potassium di-deuterium phosphate crystal, chemical formula KD2PO4, is a comprehensive electro-optical crystal product.
Attributes: KDP and also DKDP (KD*P) crystals have the advantages of high resistance to light damage limit, high electro-optic coefficient, great ecological tolerance, small style, and benefit and modification.
Application: It is widely used in high-tech fields such as laser frequency conversion, electro-optic modulation, and electro-optic fast switching. It can be utilized to make affordable and large-scale finished nonlinear parts ideal for dual regularity (SHG) and three-way frequency (THG) fields.
- KTP crystal
Summary: KTP crystal, known as potassium titanium phosphate crystal, whose chemical formula is KTiOPO4, is a crystal item with outstanding nonlinear and electro-optical residential properties.
Characteristics: KTP has homes of high electro-optical coefficient and reduced dielectric continuous, which can operate at high frequency and be used as an electro-optical Q-switched crystal. KTP also has excellent regularity doubling performance:
- Big nonlinear coefficient
- No declination Angle
- High optical damages threshold
- Little modification in stage matching problems with temperature level
Application: made use of medium and tiny power Nd: YAG and Nd: YVO4 laser result 1064-532nm laser frequency doubling crystal materials.
- LN (LiNbO3) crystal
Summary: LiNbO3 crystal, also called lithium niobate crystal, referred to as LN crystal, is an electro-optical crystal with outstanding extensive performance.
Characteristics: Compared to various other electro-optical crystals, the crystal has the advantages of tiny dimension, hard decidualization, large electro-optical coefficient, vast transparency range, high electro-optical performance, low absorption loss, and also reduced damage limit.
Application: It has a variety of applications in related areas, such as electro-optic modulators and 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 increasing above 1000 nm wavelength and optical parameter amplification of 1064nm pump light.
Read more: Amazing passive Q switch crystal.