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Infrared Crystals

Infrared crystals are vital optical materials for applications requiring high transparency in the IR spectrum, such as thermal imaging, spectroscopy, and laser systems. Combining excellent transmission, durability, and thermal stability, they are essential for medical imaging, defense, telecommunications, and advanced photonic technologies.

comparison table

Crystal
Transmission Range (μm)
Refractive Index
Key Features
Application

BaF₂

0.15 - 12.5
1.46
Low refractive index, excellent radiation resistance
Thermal imaging, FTIR spectroscopy, radiation detectors

CaF₂

0.13 - 10
1.43
Low dispersion, high laser damage threshold
Laser optics, UV lithography, thermal imaging

MgF₂

0.12 - 7
1.38
High durability, resistant to thermal shocks
UV and IR spectroscopy, optical coatings

LiF

 

0.11 - 7
1.39
Lightweight, minimal birefringence
High-energy lasers, X-ray monochromators

ZnSe

0.6 - 20
2.40
High thermal conductivity, low absorption
CO₂ laser systems, thermal imaging, spectroscopy

ZnS

0.4 - 12
2.35
Lightweight, durable for aerospace
IR windows, thermal cameras, military optics

Monocrystalline Silicon

1 - 10
3.42
High thermal conductivity, cost-effective
Thermal imaging, IR spectroscopy, laser systems

Monocrystalline Germanium

2 - 14
4.0
High refractive index, excellent IR transmission
Thermal imaging, IR lenses, spectroscopy

Quartz Crystal

0.19 - 3.5
1.54
High optical clarity, durable
Spectroscopy, telecommunications, optical instruments

Sapphire Crystal

0.15 - 55
1.77
Exceptional hardness, wide transparency range
Laser optics, thermal imaging, aerospace systems

Barium Fluoride (BaF₂)

BaF₂ crystals offer high transparency from the UV to IR regions, making them a versatile optical material. Known for their low refractive index and broad transmission range, they are widely used in spectroscopy and medical imaging.
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Calcium Fluoride (CaF₂)

CaF₂ crystals are renowned for their exceptional optical performance across a wide spectral range. They are highly durable and exhibit low dispersion, making them a preferred choice for precision optics.
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Magnesium Fluoride (MgF₂)

MgF₂ crystals offer a unique combination of high transparency, durability, and thermal stability, making them indispensable for a wide range of photonic applications. are prized for their exceptional durability and wide transmission range. They are highly resistant to mechanical and thermal shocks, making them suitable for extreme environments.
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Lithium Fluoride (LiF)

LiF crystals are known for their exceptional UV transparency and minimal birefringence. They are lightweight and offer excellent resistance to thermal and radiation damage.
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Zinc Selenide (ZnSe)

ZnSe crystals are highly efficient in the mid-IR range, offering excellent optical performance and high thermal conductivity. They are widely used in CO₂ laser systems and thermal imaging devices.
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Zinc Sulfide (ZnS)

ZnS crystals are versatile materials that exhibit high transmission across a broad spectral range. They are lightweight, durable, and well-suited for infrared applications.
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Monocrystalline Silicon Crystal

Monocrystalline Silicon crystals are widely used in IR applications due to their high thermal conductivity and low absorption. They are a cost-effective solution for high-performance systems.
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Monocrystalline Germanium Crystal

Germanium crystals are renowned for their high refractive index and excellent IR transmission. They are ideal for precision optical systems in the mid-IR range.
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Quartz Crystal

Quartz crystals are versatile materials with high durability and excellent optical clarity. They are used across a wide range of photonic applications.
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Sapphire Crystal

Sapphire crystals are known for their exceptional hardness and wide transparency range. They are widely used in high-durability optical systems.
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