Potassium Bromide (KBr) Optical Crystal, <110>, 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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Manufacturer: Atomfair LLC
Brand: ATOMFAIR®
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This potassium bromide optical crystal is moisture-sensitive and water-soluble, requiring storage in a dry environment and avoidance of aqueous contact. Chemical polishing is not recommended; handling must be performed in a cleanroom environment to preserve surface integrity.
- Moisture Sensitivity: Store and handle the crystal in a dry environment to prevent surface degradation from atmospheric moisture.
- Water Solubility: Avoid any contact with water or aqueous solutions as the crystal is water-soluble and will dissolve.
- Chemical Polishing Restriction: Do not use chemical polishing methods; only mechanical polishing is permissible if surface rework is required.
- Cleanroom Handling Requirement: Unpack and handle the crystal only in a Class 1000 or cleaner environment to maintain surface quality.
What are the key performance trade-offs of using a single-side polished KBr <110> crystal for infrared spectroscopy compared to double-side polished alternatives?
The single-side polish on this 20 x 20 mm KBr crystal provides a cost-effective option for applications where only one optical surface requires high quality, such as thin-film substrate workflows. However, double-side polishing would be necessary for transmission-mode spectroscopy where both surfaces must minimize scatter. The source specifies a surface roughness of ≤ 30 nm and surface quality S/D 80/50, which are adequate for many IR spectroscopy setups but may limit performance in high-precision laser window applications.
Can this KBr <110> crystal be used as a water-soluble substrate for film-substrate separation, and what handling constraints apply?
Yes, the product description explicitly lists water-soluble thin-film substrate workflows as an application. 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 within a Class 1000 or cleaner room to prevent surface degradation. This makes it suitable for film-substrate separation where the KBr can be dissolved away, but requires strict humidity control during handling.
What are the infrastructure and safety requirements for integrating this KBr optical crystal into a mid-infrared spectroscopy system?
The crystal has a transmission range of 0.2–27.5 μm and a refractive index of 1.49, making it compatible with standard FTIR spectrometers covering the mid-IR region. However, its melting point of 770 °C and density of 1.98 g/cm³ are not limiting factors for typical benchtop use. The primary infrastructure requirement is a dry environment or desiccator storage due to its moisture sensitivity. No special ventilation or cooling is needed, but users must avoid chemical polishing and ensure orientation tolerance of ±0.5–2° is maintained during mounting.
This <110>-oriented KBr optical crystal provides broad transmission from 0.2 to 27.5 μm with 91% transmission efficiency and low impurity absorption, making it suitable for infrared spectroscopy and thin-film substrate applications; however, its water solubility requires strict moisture control during handling and storage.
Positive
- Broad UV-to-mid-IR transmission: Transmission range of 0.2–27.5 μm covers ultraviolet through mid-infrared wavelengths, enabling use in infrared spectroscopy and optical component applications.
- High transmission with low impurity absorption: 91% transmission with low impurity absorption ensures efficient optical throughput for sensitive spectroscopic measurements.
Trade-offs
- Moisture-sensitive water-soluble crystal: KBr is water-soluble and moisture sensitive; exposure to ambient humidity can degrade surface quality and requires storage in dry conditions.
- Chemical polishing not recommended: The manufacturer advises against chemical polishing due to solubility concerns; surface finishing options are limited to mechanical methods.
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).
