| Autor: |
Galli M; Dipartimento di Fisica A Volta, Universit`a degli Studi di Pavia, 27100 Pavia, Italy. matteo.galli@unipv.it, Gerace D, Welna K, Krauss TF, O'Faolain L, Guizzetti G, Andreani LC |
| Jazyk: |
angličtina |
| Zdroj: |
Optics express [Opt Express] 2010 Dec 06; Vol. 18 (25), pp. 26613-24. |
| DOI: |
10.1364/OE.18.026613 |
| Abstrakt: |
We present the first demonstration of frequency conversion by simultaneous second- and third-harmonic generation in a silicon photonic crystal nanocavity using continuous-wave optical excitation. We observe a bright dual wavelength emission in the blue/green (450-525 nm) and red (675-790 nm) visible windows with pump powers as low as few microwatts in the telecom bands, with conversion efficiencies of ∼ 10 (-5) /W and ∼ 10/ W(2) for the second- and third-harmonic, respectively. Scaling behaviors as a function of pump power and cavity quality-factor are demonstrated for both second- and third order processes. Successful comparison of measured and calculated emission patterns indicates that third-harmonic is a bulk effect while second-harmonic is a surface-related effect at the sidewall holes boundaries. Our results are promising for obtaining practical low-power, continuous-wave and widely tunable multiple harmonic generation on a silicon chip. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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