Resonance Effect in Brunel Harmonic Generation in Thin Film Organic Semiconductors
- Department of Physics Ludwig‐Maximilians‐Universität Munich D‐85748 Garching Germany, Max Planck Institute of Quantum Optics D‐85748 Garching Germany
- Physics and Astronomy Department King Saud University Riyadh 11451 Saudi Arabia
- Otto Schott Institute of Materials Research Friedrich Schiller University Jena D‐07743 Jena Germany
- Institute of Physical Chemistry Friedrich Schiller University Jena D‐07743 Jena Germany
- Department of Physics Ludwig‐Maximilians‐Universität Munich D‐85748 Garching Germany
- Institute of Physical Chemistry Friedrich Schiller University Jena D‐07743 Jena Germany, Institute of Applied Physics and Abbe Center of Photonics, Friedrich Schiller University Jena D‐07743 Jena Germany, Fraunhofer Institute of Applied Optics and Precision Engineering D‐07745 Jena Germany
- Department of Physics Ludwig‐Maximilians‐Universität Munich D‐85748 Garching Germany, Max Planck Institute of Quantum Optics D‐85748 Garching Germany, SLAC National Accelerator Laboratory Menlo Park CA 94025 USA, Applied Physics Department Stanford University Stanford CA 94305 USA
- Institute of Quantum Technologies and Advanced Computing King Abdulaziz City for Science and Technology (KACST) Riyadh 11442 Saudi Arabia
Abstract Nonlinear optical properties of organic semiconductors (OSCs) have been extensively investigated in the perturbative regime, while strong light induced high‐order processes in solid‐state OSCs are less studied. Here, below‐threshold harmonic generation is examined, both experimentally and theoretically, in two solid‐state thin film OSCs, that is, tetraphenylporphyrin and zinc tetraphenylporphyrin. Results show that the π–π* excitations of the porphyrin ring system generate the harmonic emission. The contribution of the Brunel harmonic to the 5th harmonic emission is uncovered, where the resonant 5‐photon transition ( S 0 → S 2 transition) is found to lead to an early onset of non‐perturbative behavior. A similar resonance effect is expected in Brunel harmonic generation in other organic materials.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Organization:
- European Research Council (ERC); USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
- Grant/Contract Number:
- AC02-76SF00515
- OSTI ID:
- 1974640
- Journal Information:
- Advanced Optical Materials, Journal Name: Advanced Optical Materials Journal Issue: 16 Vol. 11; ISSN 2195-1071
- Publisher:
- Wiley Blackwell (John Wiley & Sons)Copyright Statement
- Country of Publication:
- Germany
- Language:
- English
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