The fifth application of optical technology

Laser protection against high damage threshold films and lasers
With the rapid development of laser technology in recent years, laser weapons have gradually become a reality. The emergence of high-power lasers as directed energy weapons and the resulting issues of launch and protection have put forward new and higher requirements for optical films.

First, in a high-power laser weapon system, the optical film on the optical element used to reflect or transmit high-energy laser needs to have a high damage threshold to ensure the normal operation of the optical element. When the high-energy laser and the weapon's optical tracking and sighting system share the same optical path, the optical film must meet the optical performance of the laser and the tracking and sighting system working band while ensuring a high damage threshold. If there is a good environmental adaptability in an open system. With the increase of laser power, these requirements will become more difficult to realize. Therefore, it is the only way to develop high-power laser weapons to carry out research on the laser damage mechanism of optical films and develop related preparation and testing technologies.
 
Secondly, due to the development of laser weapons, optical systems for reconnaissance, tracking, countermeasures, etc. are facing increasing threats. The laser protection technology developed by the method of optical thin film is one of the effective ways to realize the protection of these optical systems from laser weapons. In the optical system, the optical coating method can be used to selectively transmit the spectrum, filter out the wavelength of the laser, so that it cannot enter the optical system, and the system can be protected from damage.