Objective
Chirped (aperiodic) quasi-phasematched (CQPM) gratings offer many advantages in the context of optical parametric chirped pulse amplification (OPCPA), including ultrabroad bandwidths, engineerable gain spectra, and potential for high efficiency via adiabatic frequency conversion. Our main goals are to investigate CQPM devices and apply them to mid-infrared OPCPA systems. We will determine the limiting factors of our current high repetition rate mid-IR OPCPA system, develop an accurate numerical model, and design improved devices. As an example, with optimal nonlinear CQPM profiles, we plan to suppress spectral gain narrowing, and thereby obtain higher efficiencies and broader bandwidths.
For future experiments, increases to the power and bandwidth of our existing system are required. We plan to develop an improved seed source based on a 1-micron-wavelength thin disk laser, spectrally broadened via supercontinuum generation (SCG). Concurrent upgrades to the pump laser to hundreds of Watts power are planned. To support these powers, we will explore approaches to scaling the CQPM devices to higher power.
Recent developments in SESAM mode-locked thin disk lasers have enabled high-power, short-pulse operation (580 fs, 275 W, 17 microjoules). For some applications, much shorter pulse durations are needed. One way we plan to approach this problem is by performing SCG (seed generation) followed by OPA (for efficient conversion). Due to the short pump pulses, we will develop group-velocity matched CQPM OPCPA designs.
With these laser sources, we plan to perform strong-field laser-matter experiments. For example, the high repetition rates and tunability will help us to explore the wavelength scaling of several processes related to high harmonic generation.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: https://op.europa.eu/en/web/eu-vocabularies/euroscivoc.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: https://op.europa.eu/en/web/eu-vocabularies/euroscivoc.
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Programme(s)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
FP7-PEOPLE-2012-IIF
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Funding Scheme
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
8092 Zuerich
Switzerland
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