Pockels Cell

1. Pockels Cell

Based on the electro-optic impact, when the applied electrical field acts on the Pockels cell crystal (electro-optic crystal), the Pockels cell crystal (electro-optic crystal) is like a wave plate whose phase delay is related to the applied electric field. The polarization state of the outbound light from the Pockels cell crystal will certainly alter to ensure that the strength and amplitude of the outward bound light from the analyzer are modulated, which is electro-optic inflection. The modulation gadget is called a Pockels cell.

2. Pockels cell crystal

The crystals that produce the electro-optical result are called Pockels cell crystals, that is, electro-optical crystals. They each have their benefits. Presently, the major Pockels cell crystals on the marketplace consist of BBO crystals, DKDP crystals, KTP crystals, and LN (LiNbO3) crystals.

(1) BBO crystal

Description: BBO crystal, likewise called barium metaborate crystal, with chemical formula BaB2O4, is an electro-optic and also nonlinear crystal with outstanding comprehensive homes.
Attributes: BBO crystal has an extremely wide light transmission variety, a very reduced absorption coefficient, as well a weak piezoelectric buzzing result; compared with other electro-optical modulation crystals, it has a greater extinction ratio, a larger stage matching angle, and also High resistance to light damages limit, broadband temperature level matching and also outstanding optical uniformity are beneficial to boost the security of laser outcome power, specifically in the regularity triple of Nd: YAG laser has a wide variety of applications.

Application: It has a variety of related fields in the 3rd, 4th and also fifth 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 various other related areas. Application. It can additionally be related to OPO arrangements, optical parametric oscillators, and electro-optical applications from near-infrared to deep ultraviolet.

(2) DKDP crystal

Description: DKDP (KD * P) crystal, referred to as potassium 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 damages limit, high electro-optic coefficient, excellent ecological tolerance, portable design, and ease and change.

Application: Laser canonical conversion, electro-optic deflection, electro-optic quick change, and other modern fields widely used it. It can manufacture low-cost, large-volume nonlinear devices, and it is a double regular (SHG) and triple regular (THG) area.

(3) KTP crystal

Description: KTP crystal, likewise known as potassium titanium phosphate crystal, whose chemical formula is KTiOPO4, is a crystal product with outstanding nonlinear and electro-optical properties.

Qualities: KTP has buildings of high electro-optical coefficient and reduced dielectric continuous. It can use as an electro-optical Q-switched crystal for operating at high frequency.KTP additionally has outstanding frequency-increasing performance:

• Large nonlinear coefficient
• No declination Angle
• High optical damages limit
• Little modification in stage matching problems with temperature level

Application: utilized in the tool as well as small power Nd: YAG and Nd: YVO4 laser output 1064-532nm laser frequency doubling crystal materials.

(4) LN (LiNbO3) crystals

Summary: LiNbO3 crystal, also referred to as lithium niobate crystal and referred to as LN crystal. It is an electro-optic crystal with excellent detail performance.

Characteristics: Compared with other electro-optical crystals, the crystal has the advantages of small dimension, difficult decidualization, large electro-optical coefficient, wide transparency variety, high electro-optical effectiveness, reduced absorption loss, and reduced damage threshold.

Application: It has a variety of applications in relevant areas, such as electro-optic modulators and Q-switches in Nd: YAG, Nd: YLF, Ti: Sapphire lasers, and modulators in fiber optics. 532nm, 1064nm, and 2940nm lasers can use at the same time. There is a regular doubling in the optical specification improvement at 1000 nm wavelength and 1064 nm pump light.

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