Topic
Four-wave mixing
About: Four-wave mixing is a research topic. Over the lifetime, 7530 publications have been published within this topic receiving 112702 citations.
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TL;DR: In this article, the authors demonstrate dispersion engineering in a microbubble resonator (MBR) fabricated by a two-CO$_2$ laser beam technique, and the zero dispersion wavelength shifts to values shorter than 764 nm, making phase matching possible around 765 nm.
Abstract: Frequency comb generation in microresonators at visible wavelengths has found applications in a variety of areas such as metrology, sensing, and imaging. To achieve Kerr combs based on four-wave mixing in a microresonator, dispersion must be in the anomalous regime. In this work, we demonstrate dispersion engineering in a microbubble resonator (MBR) fabricated by a two-CO$_2$ laser beam technique. By decreasing the wall thickness of the MBR down to 1.4 $\mu$m, the zero dispersion wavelength shifts to values shorter than 764 nm, making phase matching possible around 765 nm. With the optical \textit{Q}-factor of the MBR modes being greater than $10^7$, four-wave mixing is observed at 765 nm for a pump power of 3 mW. By increasing the pump power, parametric oscillation is achieved, and a frequency comb with 14 comb lines is generated at visible wavelengths.
45 citations
44 citations
TL;DR: Strong self-defocusing in bacteriorhodopsin films in the near IR with powers in the tens of milliwatts is found and the defocused beam acquires a ring pattern because of spatial self-phase modulation.
Abstract: We find strong self-defocusing in bacteriorhodopsin films in the near IR with powers in the tens of milliwatts. The defocused beam acquires a ring pattern because of spatial self-phase modulation. We also demonstrate efficient four-wave mixing with phase-conjugate reflectivities of 26%. We discuss the origin of this high nonlinearity.
44 citations
44 citations
TL;DR: In this paper, bit error rate measurements on a new optical AND gate using four-wave mixing in a semiconductor laser amplifier and operating on degenerate wavelength input signals are presented.
Abstract: Bit error rate measurements on a new optical AND gate using four-wave mixing in a semiconductor laser amplifier and operating on degenerate wavelength input signals are presented. Operation on two 10 Gbit/s data streams with BER <10/sup -10/ shows the potential for using the device in high bit rate optical networks.
44 citations