2011
DOI: 10.1364/ol.36.001809
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Enhanced efficiency of the second harmonic inhomogeneous component in an opaque cavity

Abstract: In this Letter, we experimentally demonstrate the enhancement of the inhomogeneous second harmonic conversion in the opaque region of a GaAs cavity with efficiencies of the order of 0.1% at 612 nm, using 3 ps pump pulses having peak intensities of the order of 10 MW=cm 2 . We show that the conversion efficiency of the inhomogeneous, phase-locked second harmonic component is a quadratic function of the cavity factor Q. © 2011 Optical Society of America OCIS codes: 190.2620, 190.5530. Second harmonic generat… Show more

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Cited by 11 publications
(21 citation statements)
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“…11(b) depend on the pump spectrum, i.e., shorter pulses produce correspondingly narrower TH spectra. This behavior also occurs for a GaAs defect layer surrounded by DBRs when the SH signal is tuned below the absorption edge, and higher efficiencies are possible by adding more periods to the DBRs [50]. These results confirm theoretically that if the pump is tuned to a region of relative transparency phase locking triggers a form of electromagnetic transparency at the harmonic wavelengths regardless of material dispersion, with relatively large enhancement of conversion efficiency in cavity environments.…”
Section: Shg and Thg From A Fabry-pérotétalon And Multilayer Stacksupporting
confidence: 74%
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“…11(b) depend on the pump spectrum, i.e., shorter pulses produce correspondingly narrower TH spectra. This behavior also occurs for a GaAs defect layer surrounded by DBRs when the SH signal is tuned below the absorption edge, and higher efficiencies are possible by adding more periods to the DBRs [50]. These results confirm theoretically that if the pump is tuned to a region of relative transparency phase locking triggers a form of electromagnetic transparency at the harmonic wavelengths regardless of material dispersion, with relatively large enhancement of conversion efficiency in cavity environments.…”
Section: Shg and Thg From A Fabry-pérotétalon And Multilayer Stacksupporting
confidence: 74%
“…(Color online) Linear transmittance and/or reflectance of a multilayer stack that contains a Si defect layer for right-to-left or left-to-right propagation. The resonance near 800 nm is ∼20 nm wide, and is resolved using subpicosecond, incident pulses [50]. reflectance are shown in Fig.…”
Section: Shg and Thg From A Fabry-pérotétalon And Multilayer Stackmentioning
confidence: 98%
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“…Further experimental evidence 8 shows that the INH-SH is enhanced by several orders of magnitude compared to bulk 7 in an opaque GaAs cavity environment thanks to pump and INH-SH field localization and overlap. 9 The results of more experiments carried out in a high-Q GaAs cavity 10 hint that the INH-SH signal ͑612 nm͒ can achieve conversion efficiencies of order 10 −3 with pumping intensities as low as 0.15 MW/ cm 2 inside the cavity. We now ask the following question: does this phenomenon hold for harmonic fields tuned at frequencies in the metallic range?…”
mentioning
confidence: 99%
“…Taken together, these results show that the functionality of semiconductors may be pushed down the wavelength scale, toward the soft x-ray region of the spectrum. The next step to take beyond this work is to study the dynamics in cavity environments, as was done previously, 8,10 possibly in silicon or metal-semiconductor structures, 12 where the ͑3͒ of metals can be fully exploited to achieve high conversion efficiencies in the deep UV range.…”
mentioning
confidence: 99%