HEM® LAOS® Sapphire
- Maximized Transmission Below 250nm
- UV and VUV Optimized
- Ultra High Purity
- Solarization Resistant
- Low Fluorescence
A special class of sapphire crystals used for precision windows, lenses and filters.
HEM LAOS Sapphire is recognized for being the premium crystal material for sapphire optics and sapphire lenses.
Addressing the high energy fluence requirements of High Energy Laser (HEL) windows and other critical, low absorption optical applications.
HEM LAOS is manufactured in a proprietary process, which eliminates almost all intrinsic photon absorption in the bulk sapphire material. It has been tested with Photothermal Common-path Interferometry and has shown less than 80 ppm of bulk absorption at 1064 nm. HEM LAOS is offered with superior crystal lattice structure having high refractive index homogeneity. HEM LAOS is ultra-high purity and is ideally suited for UV applications where solarization affects other sapphire materials. HEM LAOS material can be optimized for different wavelengths of interest in the spectral range of 150 nm to 5.5 microns.
Performance Characteristics
- Bulk Absorption <80 ppm/cm @ 1064nm
- Refractive Index Homogeneity in the 0.02 P-V Range
- 1/10th Wave P-V Wavefront
- Ultra-High Purity
- Low Thermal Optic Coefficient (dn/dt)
- Wide Spectral Range of 150nm to 5.5µm
- Solarization Resistant
- A, C, M and r-Planes Available
Specifically optimized for sapphire optics operating at or below 250nm.
HEM LAOS193 sapphire material outperforms all other sapphire optics in the UV and EUV regimes.
This low bulk material has extremely uniform optical homogeneity, allowing optics with 1/10th wave P-V available. If your optical sapphire application calls for material working below 250nm, LAOS® should be considered as a solution.
The highest grade of HEM Sapphire produced with optical homogeneity measured as low as 0.02 P-V.
Current Applications
HEM LAOS material has been shown by third parties to have increased Raman Spectroscopy performance relative to other sapphire suppliers.
HEM® Sapphire are aboard the International Space Station, in advanced gravitational-wave interferometers, and in other leading-edge technology platforms. High Energy Lasers utilize HEM LAOS because of the low absorption requirements at 1064nm, low dn/dt and high purity levels.
HEM LAOS 193 is the clear choice for today’s semiconductor applications. Semiconductor UV testing equipment companies will benefit from HEM LAOS 193 sapphire optics which are extremely hard, inert to high-temperature gasses, are thermally shock resistant, and have much longer lifetimes than engineered glasses. Sapphire is superior to glass and leading companies are appreciating the improved cost of ownership of HEM LAOS 193 sapphire optics for semiconductor inspection process.
Request a Quote
Contact us for a quote on any of our sapphire products, or to discuss your specific technical application and requirements.
Request a quote