Ultra-broadband long-wave-infrared pulse production using a chirped-pulse difference-frequency generation
Abstract
We present a broadband light source based on near-infrared chirped-pulse difference-frequency mixing that is suitable for seeding long-wave-infrared (LWIR) optical parametric chirped-pulse amplification (OPCPA). A nitrocellulose pellicle is used in a Ti:sapphire regenerative amplifier to generate dual-frequency output pulses, which are subsequently mixed in a 0.4-mm thick AgGaS2 crystal. LWIR pulses with ∼1 µm full width at half maximum (FWHM) bandwidth centered at 10.5 µm are generated by mixing transform-limited pulses. Assisted by genetic algorithm optimization, the bandwidth is broadened to ∼3 µm FWHM within the 8–12 µm atmospheric transmission window. The seed source paves the path towards tabletop ultrafast terawatt-class passively carrier-envelope-phase stabilized OPCPA in the LWIR region.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jun 22, 2022
- Source ID
- 10.1364/ol.458405
Entities
People
- Hao Huang
- Igor Jovanovic
- John Nees
- Megan L. Burger
- Xuan Xiao
Organizations
- Office of Naval Research
- University of Michigan