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Low-noise frequency-agile photonic integrated lasers for coherent ranging

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Polymeric MOEMS variable optical attenuator

Luis Guillermo Villanueva Torrijo, Victor Javier Cadarso Busto

In this letter, we take advantage of the high coefficient of thermal expansion (CTE) of a chemically amplified, epoxy-based negative polymer (SU-8) to define a low-power consumption polymeric variable optical attenuator that combines the working principles ...

2006

Optically tunable microcavity in a planar photonic crystal silicon waveguide buried in oxide

Hans Peter Herzig

We present all-optical tuning and switching of a microcavity inside a two-dimensional photonic crystal waveguide. The photonic crystal structure is fabricated in silicon-on-insulator using complementary metal-oxide semiconductor processing techniques based ...

2006

Ultrafast photonic crystal nanocavity laser

Hatice Altug

Spontaneous emission is not inherent to an emitter, but rather depends on its electromagnetic environment. In a microcavity, the spontaneous emission rate can be greatly enhanced compared with that in free space. This so-called Purcell effect can dramatica ...

2006

Liquid crystal electric tuning of a photonic crystal laser

Demetri Psaltis

We demonstrate an electrically-tuned nematic liquid crystal (LC) infiltrated photonic crystal (PC) laser. The PC laser is encased between two transparent indium tin oxide (ITO) glass plates which serve as the modulating electrodes and also define the LC ce ...

2004

Liquid-crystal electric tuning of a photonic crystal laser

Demetri Psaltis

An electrically tuned nematic liquid crystal (LC) infiltrated photonic crystal (PC) laser was analyzed. LC tuning of the PC laser was demonstrated by recording the lasing wavelength as a function of the voltage applied across the LC cell. The PC laser betw ...

2004

VUV luminescence and spectroscopy of F2 in Ne crystals

Majed Chergui

The F2 laser emission in Ne matrixes at 160.6 nm is reported for the first time. Its excitation spectrum in the 11-16 eV range has been recorded by means of tunable synchrotron radiation. Anomalous envelopes of vibrational progressions occurring in the gas ...

1994