Acousto-optic coupling in 1-D phoxonic potential well nanobeam cavity using slow modes

Synchronous acousto-optic tuning of free-space external-cavity lasers.

Mechanically tuned external-cavity lasers in which the cavity and the mode filter are tuned synchronously are well known and commercially available. The synchronicity allows phase-continuous tuning to be obtained. Acousto-optic tuning has potential advantages in terms of speed, stability, and precision, but a method for synchronous tuning is required. We propose such a method and describe its e...

Dark modes, slow modes, and coupling in multimode systems

We present general aspects of coupling among two or more families of modes with a view to deepen the insight on so-called “dark modes.” We first review the relationship of dark modes, “coherent population trapping,” “rotating wave approximation,” “coupled-mode theory,” and a few related concepts. The approach we emphasize is related either to inhomogeneous light–matter strong coupling or to the...

Laser diode cavity ring-down spectroscopy using acousto-optic modulator stabilization

Acousto - Optic Isolator ( Aoi )

Nanobeam photonic crystal cavity quantum dot laser.

The lasing behavior of one dimensional GaAs nanobeam cavities with embedded InAs quantum dots is studied at room temperature. Lasing is observed throughout the quantum dot PL spectrum, and the wavelength dependence of the threshold is calculated. We study the cavity lasers under both 780 nm and 980 nm pump, finding thresholds as low as 0.3 microW and 19 microW for the two pump wavelengths, resp...