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Design considerations for quasi-planar, high-Q, silicon-on-insulator microphotonic resonators are presented. A figure of merit for use in comparison between microphotonic designs is presented and applied to compare existing and proposed designs.
A one-dimensional photonic bandgap lattice consisting of 72 periodically-cascaded microrings was fabricated in benzocyclobutene. A wide bandgap of 1.6 nm and extinction > 20dB were achieved. The device exhibited low transmission loss even after 72 microrings.
A membrane photonic crystal cavity coupled to a waveguide is fabricated and characterised. Fabry-Perot method was used to measure propagation losses. We show that coupling results in asymmetric features in the transmission suitable for high-speed analog modulation.
We report on a singly resonant injection seeded optical parametric ring oscillator with signal pulse energy of up to 38 mJ, 50% pump depletion, spectral purity of 99.97%, and M2 of about 6.
Stimulated-Brillouin-Scattering (SBS) provides passive Q-switching of a Nd:YAG-laser. Mode-coupling was actively supported by an AOM. Numerical simulations based on spectrally resolved rate equations including SBS-Stokes-shift and mode-locking explain special spectral features of this laser.
We report a compact, narrow-line intracavity OPO with a grazing-incidence grating. This kHz pulsed OPO fits into a 25 times 25 cm area, generating 30 muJ/pulse at 1560 nm with a linewidth of 0.8 cm-1.
We simulate an evolutionary process for designing a novel high confinement photonic structure, starting with random patterns. We show an emergence of periodicity and the formation of a novel low modal volume resonator.
We demonstrate mode switching in tandem quasi-stadium laser diodes. Switching is achieved by optical injection between lasing in the cavity axis and the closed ring trajectory of a quasi-stadium laser resonator.
We review major developments that have led to a high performance, polarization independent, microphotonic circuit. The design and fabrication of complex high-order microring-resonators, along with techniques to freely manipulate polarization states on-chip are presented.
The development of high finesse resonators for broadband frequency combs enabled the extension of the versatile frequency comb technique into the extreme ultraviolet with all its implications. We describe new developments in this field.
We demonstrate a 20-mum-radius disk resonator based on Si/SiO2 slot-waveguide. Quality factors around 1,000 are measured. Low effective refractive index evidences light guiding in the low index SiO2 layer.
We have obtained 90 W CW with a 1-cm-wide single-mode 970-nm array, and have wavelength beam combined 50 W quasi-CW and 29 W CW in nearly-diffraction-limited beams, the highest brightness all-diode lasers reported.
The group delay in low-loss, single-mode, 1-mm-long photonic crystal slab waveguides is measured using the phase-shift technique. Slow modes appear a promising approach for compact and massively integrated optical delay lines for signal processing.
We report the first experimental demonstration of lasing in liquid oxygen at 1588 nm when pumped by a pulsed dye laser operating at 632 nm. Results from fluorescence and loss measurements are also presented.
We demonstrate an on-chip toroidal microcavity nanocrystal quantum dot laser with a threshold energy below 10 femto-Joules at room temperature, a factor of 1 million lower than previously reported for strongly-confined, nanocrystal quantum dot lasers.
We demonstrate a high quality optical cavity with a 30 micron mirror on a micromechanical resonator. An optical finesse of 2100 is measured via cavity ring-down. High mechanical quality of the resonator is also observed.
We demonstrate WG-modes degeneracy removal with simultaneous Q-factor enhancement in optimally-tuned symmetrical photonic molecules and directional emission from asymmetrical ones. Applications of such molecules to semiconductor, evanescent-wave-coupled-gain and random lasers, and biosensors are discussed.
Recent leading-edge status of waveguide-loss and cavity-Q for photonic crystals and all-optical switching action in resonator-waveguide-coupled systems are described. All-optical digital processing chips and novel ways of dynamic controlling light will be also discussed.
We discuss second-harmonic generation experiments on planar arrays of magnetic split-ring resonators, using 150 fs pulses at 1.5 mum wavelength. Lithographic tuning reveals by far the largest signals when exciting the magnetic-dipole resonance.
We present measurements of the transmission amplitude and phase properties of Coupled-Resonator Optical Waveguides in the form of a large number ( >10) of weakly coupled microring resonators fabricated in optical polymers.
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