Semrock specifies laser damage threshold, or optical damage rating values for most of our products designed for laser applications. LDT specifications can be found on each product webpage.

For further information on LDT, please refer to our Laser Damage Threshold technical note.
BrightLine® fluorescence filters for wideband excitation (parts that begin with FF) are not tested for laser damage threshold. Similarly designed filters that have been tested for laser damage threshold meet and exceed the 1 J/cm2 @ 532 nm (for a 10 nm pulse width) specification.
If you are unsure if your laser will damage a Semrock filter, please contact our technical support team for assistance. Please be sure to include the following information:
1. Type of laser (laser pulsed, continuous-wave, or quasi-cw)
2. Pulse width (if pulsed)
3. Average power
4. Beam diameter
5. Operating wavelength