Silver plated reflective film: an ideal choice for femtosecond lasers

         Silver plated reflective filmIt is an advanced coating product with extremely high partial reflectance in the visible to near-infrared range. It can be effectively applied in fields such as femtosecond lasers, providing users with excellent performance and user experience. This article will provide a unique and innovative perspective analysis on silver plated reflective films, and through examples and data analysis, deeply analyze their advantages and applicability.
1. High reflectivity of silver plated reflective film
1.1 High reflectivity in the visible to near-infrared range
The average reflectivity (Ravg) of silver plated reflective film in the range of 450-2000um is greater than 97.5%, and the reflectivity (Ravg) in the 2-20um band is also as high as 96% or more. This makes silver plated reflective film the highest reflectivity choice among all metal mirrors.
1.2 High reflectivity characteristics suitable for femtosecond lasers
Due to its high reflectivity in the range of 450 nm-20 µ m, silver plated reflective films are highly suitable for use in femtosecond lasers. Femtosecond lasers typically operate in this wavelength range, and silver plated reflective coatings can provide extremely high reflection performance, effectively protecting the emitting components of the laser and improving the quality of the laser beam.

2. Surface protection to further enhance performance
2.1 Application of SiO2 film layer
        Silver plated reflective filmThe outer layer is coated with a 100nm thick SiO2 film layer, which can effectively protect the silver film and improve its scratch resistance and oxidation resistance. This design makes the silver plated reflective film more suitable for daily use and extends its lifespan.
2.2 Pay attention to high humidity environment and wiping rules
Although silver film is relatively soft and prone to scratching and oxidation, it should be avoided in high humidity environments during use and wiped with caution. These precautions will help maintain the optimal performance of the silver plated reflective film.
3. Analysis of the advantages of silver plated reflective film
3.1 Surface smoothness and surface accuracy
The smoothness of the silver plated reflective film is 40/20, and the surface accuracy is between 1/4 and 1/2/ 10@633nm Within the scope. This means that silver plated reflective films have highly smooth surfaces and good surface accuracy, which can effectively reduce optical distortion and improve the quality of optical systems.
3.2 High damage threshold
The damage threshold of silver plated reflective film is 3 J/cm2 at 1.064 µ m, 10 ns, 10 Hz, Ø 1.000 mm. This means that under high-energy laser irradiation, silver plated reflective films can withstand higher energy densities, reducing lens failure and system malfunctions caused by laser damage.
Conclusion:
         Silver plated reflective filmAs an advanced optical material, its high reflectivity makes it an ideal choice for applications such as femtosecond lasers. Reasonable design and application of protective layers can extend the service life of silver plated reflective films. High smoothness, good surface accuracy, and high damage threshold are also its advantages. Overall, silver plated reflective films have broad application prospects in the field of optics, providing reliable support for improving the performance of optical systems.