Citation
Babic, L. (2011, May 17). Frequency conversion in two-dimensional photonic structure.
Casimir PhD Series. Retrieved from https://hdl.handle.net/1887/17642
Version: Not Applicable (or Unknown)
Frequency conversion in
two-dimensional photonic structures
Ljubiša Babić
Publisher: Casimir Research School, Delft, the Netherlands Cover Design: Aileen Kartono
ISBN: 978-90-8593-100-3
Frequency conversion in
two-dimensional photonic structures
PROEFSCHRIFT
ter verkrijging van
de graad van Doctor aan de Universiteit Leiden,
op gezag van Rector Magnificus prof. mr. P. F. van der Heijden, volgens besluit van het College voor Promoties
te verdedigen op dinsdag 17 mei 2011 klokke 13:45 uur
door
Ljubiša Babić
geboren te Dubrovnik, Croatia in 1982
Promotiecommissie:
Promotor: Prof. Dr. J. P. Woerdman Universiteit Leiden Copromotor: Dr. M. J. A. de Dood Universiteit Leiden
Leden: Prof. Dr. J. Gómez Rivas Technische Universiteit Eindhoven Prof. Dr. H. W. M. Salemink Technische Universiteit Delft Dr. Ir. T. H. Oosterkamp Universiteit Leiden
Prof. Dr. D. Bouwmeester Universiteit Leiden en University of California at Santa Barbara (UCSB) Prof. Dr. E. R. Eliel Universiteit Leiden Prof. Dr. J. M. van Ruitenbeek Universiteit Leiden
The work presented in this thesis has been made possible by financial support from the Dutch Organization for Scientific Research (NWO) and is part of the scientific program of the Foundation for Fundamental Research of Matter (FOM).
An electronic version of this dissertation is available at the Leiden University Repository (https://openaccess.leidenuniv.nl).
Casimir PhD series, Delft-Leiden 2011-10
S ljubavlju mojim roditeljima, Nikolini i Nedeljku With love to my parents, Nikolina and Nedeljko
Contents
1 Introduction 1
1.1 Photonic structures . . . 1
1.1.1 Photonic crystals . . . 1
1.1.2 Nanowires . . . 4
1.2 Frequency conversion . . . 5
1.3 Thesis outline . . . 6
2 Second harmonic generation in gallium phosphide nanowires 11 2.1 Introduction . . . 11
2.2 Sample description . . . 12
2.3 Setup . . . 15
2.3.1 Description of the setup . . . 15
2.3.2 Second harmonic generation from BBO . . . 17
2.4 SHG in samples with GaP nanowires . . . 19
2.4.1 Tensor properties of nanowires . . . 20
2.4.2 Second harmonic generation at 425 nm . . . 24
2.5 Conclusion . . . 25
3 Second harmonic generation in freestanding AlGaAs photonic crystal slabs 27 3.1 Introduction . . . 27
3.2 Fabrication of photonic crystals . . . 29
3.3 Setup . . . 32
3.3.2 Second harmonic generation . . . 34
3.4 Linear optical characteristics . . . 34
3.5 Nonlinear optical properties . . . 42
3.6 Conclusion . . . 48
4 Method to transfer photonic crystals to a transparent gel sub- strate 51 4.1 Introduction . . . 51
4.2 Sample preparation . . . 53
4.3 Experiment . . . 57
4.4 Results and Discussion . . . 57
4.4.1 Leaky modes of photonic crystal slabs before and after the transfer to the gel substrate . . . 57
4.4.2 Interaction between the leaky modes of photonic crystal slabs transferred to a gel substrate . . . 61
4.5 Conclusions . . . 68
5 Interpretation of Fano lineshape reversal in the reflectivity spectra of photonic crystal slabs 71 5.1 Introduction . . . 71
5.2 Experiment . . . 73
5.3 Results . . . 74
5.4 Discussion . . . 76
5.4.1 Scattering matrix formalism . . . 78
5.4.2 Example: 2-port asymmetric slab . . . 80
5.4.3 Asymmetry reversal with nonzero background . . . 84
5.5 Conclusions . . . 90
6 Second harmonic generation in transmission from photonic crystals on a gel substrate 91 6.1 Introduction . . . 91
6.2 Sample preparation . . . 93
6.3 Experiment . . . 94
6.4 Results and discussion . . . 96
6.5 Conclusions . . . 107
Bibliography 109
Summary 117
Samenvatting 121
