TY  - JOUR
AU  - Hemmer, Michael
AU  - Cirmi, G.
AU  - Ravi, K.
AU  - Reichert, Fabian
AU  - Ahr, Frederike
AU  - Zapata, L.
AU  - Mücke, O. D.
AU  - Calendron, A.-L.
AU  - Cankaya, Huseyin
AU  - Barre, Damian
AU  - Matlis, Nicholas
AU  - Kärtner, F. X.
TI  - Cascaded Interactions Mediated by terahertz radiation
JO  - Optics express
VL  - 26
IS  - 10
SN  - 1094-4087
CY  - Washington, DC
PB  - OSA
M1  - PUBDB-2018-01885
SP  - 12536 - 12546
PY  - 2018
AB  - We investigate a regime of parametric amplification in which the pump and signal waves are spectrally separated by only a few hundreds of GHz frequency – therefore resulting in a sub-THz frequency idler wave. Operating in this regime we find an optical parametric amplifier (OPA) behavior which is highly dissimilar to conventional OPAs. In this regime, we observe multiple three-wave mixing processes occurring simultaneously which results in spectral cascading around the pump and signal wave. Via numerical simulations, we elucidate the processes at work and show that cascaded optical parametric amplification offers a pathway toward THz-wave generation beyond the Manly-Rowe limit and toward the generation of high-energy, sparse frequency-combs.
LB  - PUB:(DE-HGF)16
C6  - pmid:29801292
UR  - <Go to ISI:>//WOS:000432457600039
DO  - DOI:10.1364/OE.26.012536
UR  - https://bib-pubdb1.desy.de/record/402724
ER  -