Potassium Chloride (KCl) Optical Crystal, <111>, Single-side polish, 20 x 20 mmProduct Type: Infrared optical crystal
Research-grade laboratory product
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LABORATORY PROCUREMENT SUPPORT
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E-MAIL: inquiry@atomfair.com
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Manufacturer: Atomfair LLC
Brand: ATOMFAIR®
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Potassium chloride optical crystals are water-soluble and moisture-sensitive, requiring storage in dry conditions. Handling must be performed in cleanroom environments to prevent surface contamination and maintain optical quality.
- Moisture Sensitivity: The crystal is water-soluble and must be stored in a low-humidity environment to prevent surface degradation.
- Cleanroom Handling: Packaging and handling should be performed in a Class 1000 or cleaner environment to maintain surface quality.
- Chemical Polishing Restriction: Chemical polishing is not recommended due to the material's solubility in water and common solvents.
- Orientation Tolerance: The <111> orientation tolerance of ±0.5–2° must be verified before use in precision optical assemblies.
What is the practical impact of the <111> orientation for this KCl crystal in infrared spectroscopy applications?
The <111> orientation provides a specific crystallographic plane that can influence cleavage behavior and optical homogeneity for polarized IR measurements. This product is specified with an orientation tolerance of ±0.5–2°, ensuring reproducible alignment for prism, window, or thin-film substrate workflows where crystal direction affects birefringence or mechanical stability.
Can this single-side polished KCl crystal be used as a water-soluble substrate for film transfer, and what handling precautions are required?
Yes, KCl is explicitly listed as suitable for water-soluble thin-film substrate workflows. However, the crystal is moisture sensitive and water-soluble, so chemical polishing is not recommended. It must be handled in a dry environment and stored in a Class 100 clean bag; exposure to ambient humidity can degrade surface quality and transmission.
What are the key performance trade-offs between the 91% transmission and the broad 0.2–27.5 μm range for this KCl optical crystal?
The 91% transmission (uncoated) across 0.2–27.5 μm is typical for KCl, with low impurity absorption. The trade-off is that the single-side polish and surface roughness ≤30 nm minimize scatter in the UV-to-MIR range, but the water solubility limits AR coating options and long-term stability in humid environments compared to non-hygroscopic alternatives like ZnSe or CaF2.
Atomfair Potassium Chloride optical crystal in <111> orientation with single-side polish and 20×20 mm size offers broad UV-to-mid-IR transmission (0.2–27.5 μm) and water solubility for thin-film substrate release, but requires moisture-controlled handling and avoids chemical polishing.
Positive
- Broad UV-to-mid-IR transmission: Transmits from 0.2 to 27.5 μm with 91% transmission and low impurity absorption, enabling spectroscopy and infrared optics applications across a wide spectral range.
- Water-soluble substrate capability: Water solubility allows film-substrate separation workflows, useful for preparing freestanding thin films without mechanical damage.
Trade-offs
- Moisture-sensitive crystal: KCl is water-soluble and moisture sensitive; requires storage in dry environments and careful handling to avoid surface degradation.
- Chemical polishing not recommended: The supplier advises against chemical polishing, limiting post-processing options for surface refinement or rework.
Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.
To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.
Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD excl. heavy equipment). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).
