Ultrafast Infra-Red Lasers for Quantum Applications

A world leader in the design and development of ultrafast femtosecond and picosecond infrared lasers provides enabling technology for quantum applications.

Chromacity’s ultrafast lasers are an ideal platform to generate entangled photons, essential for many emerging technologies such as quantum-secured intercontinental communications based on quantum key distribution (QKD). Researchers at the University of Glasgow have used a Chromacity ultrafast 1040 nm femtosecond laser to generate pairs of entangled photons by passing them through a non-linear crystal.

A similar process is used by Chromacity in its own near and mid infra-red optical parametric oscillator (OPO) based lasers. The Chromacity Auskerry and Haskeir lasers are seeded by the same spontaneous parametric down-conversion (SPDC) process, using an ultrafast laser source to pump a non-linear crystal.

The Auskerry laser uses a periodically poled lithium niobate (PPLN) non-linear crystal to generate near infrared light in the range of 1.4 um to 4.5 um. The Haskeir laser uses a different Orientation Patterned Gallium Phosphide (OP-GaP) non-linear crystal to generate mid-infrared light in the 4.5 um to 12 um range.