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Nonlinear Photonic Crystals in KTiOPO 4
| Content Provider | Semantic Scholar |
|---|---|
| Author | Nordlof, M. |
| Copyright Year | 2007 |
| Abstract | In this master thesis a method for manufacturing a two-dimensional nonlinear photonic crystal in KTiOPO4 has been presented followed by an analysis of the frequency conversion properties. Two crystals, each of different two-dimensional period, 6.09×6 μm and 6.09×30 μm, were realized by a lithographic patterning step and electric field poling. The two-dimensional lattice supports second harmonic generation of a cw laser at different wavelengths, using multiple reciprocal lattice vectors. These results were in very good agreement with a theoretical calculation of the phase-matching properties. The acceptance bandwidth properties has been measured and we found that the bandwidth is up to 3 times larger for non-collinear propagation compared to a one-dimensional collinear interaction. Finally we report on a pulsed duo-line narrowband (∼0.2 nm) coherent light source with tunable wavelength separation (0 − 5 nm) and center wavelength (±1 nm), in the blue spectral region, using a broadband pump. Sammanfattning I detta examensarbete har en metod for att tillverka en tvadimensionell ickelinjar fotonisk kristall presenterats och mojligheten for frekvenskonvertering av ljus har undersokts. Tva kristaller, var och en med olika tvadimensionell period, 6.09×6 μm och 6.09×30 μm, har tillverkats genom en litografisk monstringsteknik foljt av elektrisk faltpolning. Det tvadimensionella gittret genererar frekvensfordubbling av ljus fran en kontinuerlig laser vid olika vaglangder genom att nyttja multipla reciproka vektorer. Dessa resultat stamde mycket val med de teoretiska berakningarna av fasmatchningsvillkoren. Acceptansbandbredden har matts och vi noterade att bandbredden ar upp till 3 ganger storre for icke-kolinjar propagering jamfort med det endimensionella kolinjara fallet. Slutligen demonstrerade vi en pulsad smalbandig (∼0.2 nm), tvalinje koherent ljuskalla med avstambar vaglangdsseparation (0− 5 nm) och centervaglangd (±1 nm) i det bla spektralomradet, pumpad av en bredbandig kalla. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://www.aphys.kth.se/polopoly_fs/1.422577!/Menu/general/column-content/attachment/nordlof_msc_thesis_2007.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
