We fabricated 1.54m laser diodes that employ one integrated GaInAsP–InP and one Si–SiO2 mirror in combination with a strain-compensated GaInAsP multiquantum-well active layer. Considerable care has to be taken of the temperature performance of the devices. Here, an important parameter is the gain offset between the gain peak wavelength and the cavity resonance. This offset is related to the exp...

In seeded High-Gain-Harmonic-Generation free electron lasers or energy recovery linear accelerators the requirements for the bunch-to-bunch timing and energy jitter of the beam are in the femtosecond and per mill regime. This implies the ability to control the cavity radiofrequency (RF) field to an accuracy of 0.02◦ in phase and up to 1·10-4 in amplitude. For the planned BESSY-FEL it is envisag...

The effect of specific cavity dimensions of circular concentric Helmholtz resonators is investigated theoretically, computationally, and experimentally. Three analytical models are employed in this study: ~1! A two-dimensional model developed to account for the nonplanar wave propagation in both the neck and the cavity; ~2! a one-dimensional solution developed for the limit of small cavity leng...

We theoretically investigate optical bistability, mechanically induced absorption (MIA) and Fano resonance of a hybrid system comprising single quantum dot (QD) embedded in solid-state microcavity interacting with the quantized cavity mode deformation potential associated lattice vibration. find that bistability can be tuned by QD-cavity coupling. further show normalized power transmission disp...

We study the low temperature physics of an ultracold atomic gas in the potential formed inside a pumped optical resonator. Here, the height of the cavity potential, and hence the quantum state of the gas, depends not only on the pump parameters, but also on the atomic density through a dynamical ac-Stark shift of the cavity resonance. We derive the Bose-Hubbard model in one dimension and use th...

The authors propose a realizable scheme for an arbitrary photon-number state on-demand source based on parametric downconversion in a doubly resonant photonic cavity. The signal-wavelength resonance serves as storage for signal photons and the idler-wavelength resonance generates time separation between exiting idler photons, enabling photon-number-resolving detection. The counting of idler pho...

Trapped modes that exist in the waveguide have different engineering applications. Excited acoustic are due to interaction between and flow fields. To further study influence of nonpotential on trapped for a two-dimensional cavity–duct system, numerical simulation method combines finite-element (FEM) associated with mixed formulation Galbrun equation computational fluid dynamics (CFD) is propos...

We report a simple scheme for stabilizing and tuning the length of a conventional piezo-driven optical cavity against the resonant transmission of a master laser. In contrast with other schemes, we drive the piezo at its mechanical resonance of 5 kHz over an amplitude equivalent to one free spectral range and use a feedback circuit that incorporates phase-sensitive detection of the master-laser...

We demonstrate optical coupling between a single tin-vacancy (SnV) center in diamond and free-standing photonic crystal nanobeam cavity. The cavities are fabricated using quasi-isotropic etching feature experimentally measured quality factors as high ?11 000. investigate the dependence of SnV center's emission by controlling cavity wavelength laser-induced gas desorption technique. Under resona...

We report a fundamentally new approach to enhance fluorescence in which surface adsorbed fluorophore-tagged biomolecules are excited on a photonic crystal surface that functions as a narrow bandwidth and tunable mirror of an external cavity laser. This scheme leads to ∼10× increase in the electromagnetic enhancement factor compared to ordinary photonic crystal enhanced fluorescence. In our expe...