We beat our .5 ppm absorption goal!
We have been very excited as you may know, with our proprietary IBS process. We continue to see the positive effects from the changes made to our optical monitoring system. These changes are making a remarkable difference in our coating capability and quality. Now, all the hard work and months of tweaking is officially paying off.
We have just received our current results from our Laser Induced Damage Threshold, (LIDT), measurements that we have actually exceeded our expectations. We were shooting for a .5 ppm absorption goal and beat it. By a lot! Here is where we’re at so far.
Test Conditions:
- Damage fluence: X8.5 ± X0.35 J/cm2
- Test beam: Gaussian beam with radius w = 80 microns; beam area calculated as Piw2 / 2; wavelength 1064 nm.
- Measurement completed with continuous wave laser.
- Applied to 9 spots per specimen; minimum distance between the test sites: 2 mm.
- Damage threshold definition: linear fit to 0% damage probability.
- Cleaning: none (mirrors directly taken from the package as provided by the supplier).
- Test environment: ISO 14644-1 standard clean room classification level class 4, 22 degrees Celsius, 18% relative humidity.
- LIDT measurements completed in accordance with ISO 21254-1:2011.
Results:
- Laser damage threshold of less than .23 ppm absorption.
- Consistent temperature of <80 degrees Fahrenheit detection for 600 seconds exposure time with CW laser.
- Damage detection: No damage or negative effects and no rise in sample surface temperature measured by IR temperature detection.
An exciting future ahead!
The Plasma Optik team have put all the pieces together to get a laser damage threshold of less than .23 ppm and the lowest level of temperature rise during our CW testing at 1064 nm. We can truthfully say we can provide the cleanest, high-quality IBS coatings right here at Plasma Optik.
Do you need optics? We’d be happy to discuss your specifications in detail so make sure you call us today. Please let our sales team know if you have a demand for optical coatings for a small R&D project or one-off concept design that is of interest. Talk to us about your requirements and we’ll do all we can to help meet or exceed your expectations.
Call us today for your coating needs at 970-786-6218
Or feel free to email Brett Buchholtz to set up a time to discuss your thin film process needs. Make sure you follow us on LinkedIn.