We investigate nonlinear signal generation from a variety of optical coatings on common filters and mirrors. The prevalent signal is third harmonic generation (THG). The THG conversion efficiency of some… Click to show full abstract
We investigate nonlinear signal generation from a variety of optical coatings on common filters and mirrors. The prevalent signal is third harmonic generation (THG). The THG conversion efficiency of some widely available optical coatings was surprisingly high, >10-4 with modest femtosecond laser excitation pulse energies of ∼6 nJ. In addition, we demonstrate third order interferometric autocorrelation, fifth harmonic generation, and non-collinear sum frequency generation using thin film coatings of off-the-shelf bandpass filters.
Journal Title: Optics express
Year Published: 2025
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!