Photonics and Lasers

Quimby, Richard S.

doi:10.1002/0471791598

Cited by 113 publications

(88 citation statements)

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“…The optical-to-optical efficiencies for 4.8 µm emission with pump wavelengths of 3.9, 4.0, 4.1 and 4.15 µm are 22, 37, 51 and 55% respectively. Note that the Stokes efficiency limit for a pump wavelength of 4.15 μm is 86% (Quimby 2006). Moreover, from the results presented in Fig.…”

Section: Resultsmentioning

confidence: 77%

Numerical and experimental investigation of mid-infrared laser action in resonantly pumped Pr3+ doped chalcogenide fibre

et al. 2016

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Numerical modelling of a Pr 3+ -doped chalcogenide glass fibre laser is presented in this paper. The spectroscopic parameters are extracted from in-house prepared Pr 3+ doped selenide-chalcogenide glass samples and used in the modelling. In this contribution, particular attention is paid to a novel resonant pumping scheme. The modelled laser performance is tested as a function of pump wavelength, fibre length, signal wavelength, fibre background loss and output coupler reflectivity. The modelling results show that the proposed resonant pumping scheme, which might be achieved in practice using a high power QCL pump, allows for a significant reduction in the laser threshold and an increase in the laser efficiency. A slope efficiency of 54% is calculated when the fibre losses are brought down to 1 dB/m.

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Section: Resultsmentioning

confidence: 77%

Numerical and experimental investigation of mid-infrared laser action in resonantly pumped Pr3+ doped chalcogenide fibre

et al. 2016

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“…The peak intensity for Gaussian beam is two times higher than it is often assumed and this formula can be verified by integrating the intensity over the whole beam area (Quimby 2006). Additionally, assuming that temporal coherence of the exciting source depends only on the duty cycle and the shape of the pulse we can write:…”

Section: Theoretical Considerationmentioning

confidence: 90%

Enhancement of two photon fluorescence collection by using effectively single mode double clad hollow core fiber with low dispersion at 800 nm

Stawska

Bereś-Pawlik

2014

Opt Quant Electron

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We show that application of the double clad hollow core fiber (DCHCF) significantly affects efficiency of collecting a two photon fluorescence signal. In our approach we propose a new construction of the hollow core double clad fiber which can be used to send simultaneously an ultrafast signal through the single-mode air core and collect the florescence signal through a multimodal clad. The presented fiber has a dispersion equal to 5.13 ps/nm km and losses 0.5 dB/m in the range of 800 nm. In the wavelengths range between 770 to 850 nm the fiber is endlessly single mode with higher order modes HOM's losses above 17 dB/m. The use of such a fiber allows elimination of prevalent precompensation dispersion systems and considerably simplifies the two photon fluorescence endoscopy setup.

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“…Note that in the following, the dye spontaneous lifetime τ sp is defined as the inverse of Einstein A coefficient. This dye spontaneous lifetime τ sp should not be mistaken as the photoluminescence (PL) lifetime τ PL , 39 which is the defined as the product of τ sp and dye quantum efficiency (yield) q dye . Finally, the NrD rate is expressed as N/τnr, where the non-radiative decay lifetime τ nr can be calculated by τ nr = τ sp q dye /(1-q dye ) since…”

Section: Generalized Full Rate Equation Model and Analysismentioning

confidence: 99%

Optical properties of organic-silicon photonic crystal nanoslot cavity light source

Yang

Lin

et al. 2017

AIP Advances

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We theoretically study a dielectric photonic crystal nanoslot cavity immersed in an organic fluid containing near-infrared dyes by means of a full rate equation model including the complete cavity QED effects. Based on the modeling results, we numerically design an organic-silicon cavity light source in which its mode volume, quality factor, and far-field emission pattern are optimized for energy-efficient, high-speed applications. Dye quantum efficiency improved by two orders of magnitude and 3dB modulation bandwidth of a few hundred GHz can be obtained.

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Photonics and Lasers

Cited by 113 publications

References 0 publications

Numerical and experimental investigation of mid-infrared laser action in resonantly pumped Pr3+ doped chalcogenide fibre

Numerical and experimental investigation of mid-infrared laser action in resonantly pumped Pr3+ doped chalcogenide fibre

Enhancement of two photon fluorescence collection by using effectively single mode double clad hollow core fiber with low dispersion at 800 nm

Optical properties of organic-silicon photonic crystal nanoslot cavity light source

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