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Q-Switching Crystals

Q-Switching crystals are crucial for pulsed laser systems, enabling high peak power and precise energy control. Q-switching technology produces high-power pulses by controlling energy storage and release within the laser cavity, relying on the quality of the Q-switching crystal.

comparison table

Crystal
Refractive Index
Key Features
Applications

RTP

1.81
High damage threshold, low absorption, excellent electro-optic properties
Industrial, medical, and scientific laser systems

DKDP

1.5 (varies with wavelength)
High transparency, excellent electro-optic coefficients, handles high laser power
Military-grade laser systems, advanced spectroscopy

BBO

1.65 (varies with wavelength)
Wide transparency range (190-3500 nm), high damage threshold, non-critical phase matching
Ultra-fast lasers, industrial micromachining, medical diagnostics

LGS

1.91
Low acoustic losses, high thermal stability, excellent electro-optic performance
Aerospace, military, and industrial laser applications

Co:Spinel

1.72
High optical absorption, durable, suitable for compact lasers
Range-finding, remote sensing, medical treatments

V:YAG

1.82
High thermal conductivity, excellent optical homogeneity, exceptional beam quality
Medical lasers, laser marking systems, defense technologies

Co:MgAl₂O₄

1.72
High optical absorption, thermal resistance, consistent performance
Range-finding, LIDAR, military-grade laser systems

Rubidium Titanyl Phosphate (RTP)

RTP crystals are widely recognized for their high damage threshold, low absorption, and excellent electro-optic properties. With a high electro-optic coefficient, RTP is ideal for Q-switching and frequency doubling in pulsed laser systems. These crystals also provide low piezoelectric ringing and are thermally stable, making them suitable for high-power and high-repetition-rate lasers.
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Deuterated Potassium Dihydrogen Phosphate (DKDP)

DKDP crystals offer high transparency and outstanding electro-optic coefficients, making them ideal for precision Q-switching and frequency conversion. Their excellent power-handling capability supports demanding applications such as military laser systems and advanced spectroscopy.
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Beta Barium Borate (BBO)

BBO crystals are versatile nonlinear optical materials used in Q-switching, frequency doubling, and other laser modulation processes. They are valued for their wide transparency range (190–3500 nm), high damage threshold, and non-critical phase matching capabilities. BBO switches are used in ultra-fast lasers for industrial micromachining and medical diagnostics.
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Langasite (LGS)

LGS crystals are unique due to their piezoelectric properties, making them ideal for Q-switching in lasers requiring high thermal stability. These crystals exhibit low acoustic losses and exceptional electro-optic performance, ensuring consistent output even under intense operating conditions. They are often used in aerospace, military, and industrial applications.
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Cobalt-Doped Magnesium Aluminate (Co:Spinel)

Co:Spinel crystals are passive Q-switching materials known for their high optical absorption and excellent durability. These crystals are perfect for generating high-energy pulses in compact, diode-pumped solid-state lasers. Applications include range-finding, remote sensing, and medical treatments.
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Vanadium-Doped Yttrium Aluminum Garnet (V:YAG)

V:YAG is a passive Q-switching crystal offering high thermal conductivity and excellent optical homogeneity, suitable for producing high-energy laser pulses with exceptional beam quality. It is widely employed in medical lasers, laser marking systems, and defense technologies.
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Cobalt-Doped Magnesium Aluminate (Co²⁺:MgAl₂O₄)

Co²⁺:MgAl₂O₄ crystals are ideal for passive Q-switching in pulsed lasers. With high optical absorption and resistance to thermal effects, these crystals deliver consistent performance in demanding environments. They are commonly used in range-finding, LIDAR, and military-grade laser systems.
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