Random quasi-phase-matching for pulse characterization from the near to the long wavelength infrared
Abstract
Experiments requiring ultrafast laser pulses require a full characterization of the electric field to glean meaning from the experimental data. Such characterization typically requires a separate parametric optical process. As the central wavelength range of new sources continues to increase so too does the need for nonlinear crystals suited for characterizing these wavelengths. Here we report on the use of poly-crystalline zinc selenide as a universal nonlinear crystal in the frequency resolved optical gating characterization technique from the near to long-wavelength infrared. Due to its property of random quasi-phase-matching it’s capable of phase matching second-harmonic and sum-frequency generation of ultra-broadband pulses in the near and long wavelength infrared, while being crystal orientation independent. With the majority of ultra-fast laser sources being in this span of wavelengths, this work demonstrates a greatly simplified approach towards ultra-fast pulse characterization spanning from the near to the long-wavelength infrared. To our knowledge there is no single optical technique capable of such flexible capabilities.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 18, 2022
- Source ID
- 10.1364/oe.471988
Entities
People
- Brandin Davis
- Carlos Trallero
- Tobias Saule
Organizations
- Office of Basic Energy Sciences
- Office of Naval Research
- University of Connecticut