| Full text | |
| Author(s): |
Tomazio, Nathalia B.
[1]
;
Paula, Kelly T.
[1]
;
Henrique, Franciele R.
[1]
;
Andrade, Marcelo B.
[1]
;
Rosello-Mecho, Xavier
[2]
;
Delgado-Pinar, Martina
[2]
;
Andres, V, Miguel
;
Mendonca, Cleber R.
[1]
Total Authors: 8
|
| Affiliation: | [1] Univ Sao Paulo, Sao Carlos Inst Phys, POB 369, BR-13560970 Sao Carlos, SP - Brazil
[2] V, Univ Valencia, Dept Appl Phys & Electromagnetism ICMUV, Valencia 46100 - Spain
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | JOURNAL OF MATERIALS CHEMISTRY C; v. 8, n. 28, p. 9707-9713, JUL 28 2020. |
| Web of Science Citations: | 0 |
| Abstract | |
The strategy to incorporate graphene oxide (GO) in a composite material offers significant opportunities to realize compact photonic devices, such as saturable absorbers and polarization selective devices. However, the processing of GO-based composites by direct laser writing, which would afford vast patterning and material flexibility in a single step process, has been little addressed. In this work, we investigated the mechanisms underlying a mode cleaning effect in polymeric whispering gallery mode microresonators containing GO, aiming at the development of on-chip integrable photonic devices. We fabricated the microresonators (cavity loadedQ-factor of 20 000 at 1550 nm) in a single step of femtosecond laser writingviatwo-photon polymerization. By calculating the resonance response to damping mechanisms in the microresonators, we showed that additional losses introduced by GO play a major role in reducing the visibility of a number of resonances up to the point of effectively filtering a set of modes out. Interestingly, although the presence of GO leads to extra losses in the microresonator, it does not change the order of magnitude of theQ-factor of the highest extinction ratio resonances. Overall, this work offers interesting physical insights that can be useful for the design and fabrication of GO-based photonic micro/nanodevices. (AU) | |
| FAPESP's process: | 18/11283-7 - Nonlinear photonics: spectroscopy and advanced processing of materials |
| Grantee: | Cleber Renato Mendonça |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 15/22392-3 - Optical nonlinearities in microstructures produced by two-photon polymerization |
| Grantee: | Franciele Renata Henrique |
| Support Opportunities: | Scholarships in Brazil - Doctorate |