Abstract

High-energy, multi-octave supercontinuum (SC) generation in bulk media pumped with picosecond pulses in the mid-infrared, though pivotal in a myriad of applications, poses severe constraints due to wavelength scaling of the critical power criterion and the propensity to induce avalanche-ionization-seeded breakdown mechanisms. Here, we demonstrate a simple experimental geometry, relying on a very low numerical aperture for the pump pulse, and a crystal length commensurate with the Rayleigh length of the focusing geometry, generating a multi-octave, stable SC in yttrium aluminum garnet (YAG). The SC ranges from 500 nm to 3.5 μm (measured at 30  dB with spectral components at wavelengths up to 4.5 μm) when pumped by a 3 ps pulse centered at 2.05 μm in the anomalous dispersion regime. We also investigate the dynamics of filament formation in this interaction regime by monitoring the spectral and temporal evolution of the pulse during its propagation through the length of the crystal.

© 2018 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Three-octave-spanning supercontinuum generation and sub-two-cycle self-compression of mid-infrared filaments in dielectrics

Houkun Liang, Peter Krogen, Ross Grynko, Ondrej Novak, Chun-Lin Chang, Gregory J. Stein, Darshana Weerawarne, Bonggu Shim, Franz X. Kärtner, and Kyung-Han Hong
Opt. Lett. 40(6) 1069-1072 (2015)

Generation of an adjustable multi-octave supercontinuum under near-IR filamentation in gaseous, supercritical, and liquid carbon dioxide

Evgenii Mareev, Viktor Bagratashvili, Nikita Minaev, Fedor Potemkin, and Vycheslav Gordienko
Opt. Lett. 41(24) 5760-5763 (2016)

Octave-spanning infrared supercontinuum generation in robust chalcogenide nanotapers using picosecond pulses

Soroush Shabahang, Michael P. Marquez, Guangming Tao, Mohammad U. Piracha, Dat Nguyen, Peter J. Delfyett, and Ayman F. Abouraddy
Opt. Lett. 37(22) 4639-4641 (2012)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription