A laser diode model based on temperature dependent rate equations

The variational approach to the Glashow–Weinberg–Salam model, based on canonical quantization, is presented. It is shown that taking into consideration the Becchi–Rouet–Stora symmetry leads to the correct, temperature-dependent, effective potential. This generalization of the Weinberg–Coleman potential leads to a phase transition of the first kind.

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WEATHER AND THE ECOLOGY OF APANTELES FUMIFERANAE VIER. (HYMENOPTERA: BRACONIDAE)

Memoirs of the Entomological Society of Canada ◽

10.4039/entm120146057-1 ◽

1988 ◽

Vol 120 (S146) ◽

pp. 57-70 ◽

Cited By ~ 8

Author(s):

Vincent G. Nealis

Keyword(s):

Field Data ◽

Historical Data ◽

Spruce Budworm ◽

Temperature Dependent ◽

Maturation Period ◽

Phenological Model ◽

Model Based ◽

Egg Maturation ◽

Adult Parasitoid ◽

Specific Mortality

AbstractThe effects of weather on the spruce budworm parasitoid, Apanteles fumiferanae Vier., are examined. A phenological model based on temperature-dependent rates of development and longevity is developed and validated with field data. The model is then used to explore the effects of age-specific mortality on phenological behaviour of the parasitoid and the seasonal synchrony between the parasitoid and its host over several years. The results show that the parasitoid adult ecloses well before the host reaches an age susceptible to parasitism but that the egg maturation period and the longevity of the parasitoid diminish the consequences of the apparent asynchrony. The historical data reveal that the relative phenological characteristics of A. fumiferanae and its host vary little from year to year. In the second part of the study, temperature is shown to have a strong effect on adult parasitoid activity and on the rate of oviposition.

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Увеличение эффективности тандема полупроводниковый лазер-оптический усилитель на основе самоорганизующихся 8s квантовых точек

Физика и техника полупроводников ◽

10.21883/ftp.2021.12.51710.9713 ◽

2021 ◽

Vol 55 (12) ◽

pp. 1223

Author(s):

А.Е. Жуков ◽

Н.В. Крыжановская ◽

Э.И. Моисеев ◽

А.С. Драгунова ◽

А.М. Надточий ◽

...

Keyword(s):

Quantum Dots ◽

Excited State ◽

Laser Diode ◽

Ground State ◽

Semiconductor Optical Amplifier ◽

Optical Transition ◽

Optical Amplifier ◽

Rate Equations ◽

Resonator Length ◽

Optimal Value

The rate equations are used to analyze the characteristics of a tandem consisting of a laser diode and a semiconductor optical amplifier made of a single heterostructure with quantum dots. The optimal value of the current distribution coefficient the amplifier and the laser, as well as the optimal resonator length that provides the highest output power of the tandem were determined. It is shown that the use of the tandem allows, at the same total consumed current, to significantly (more than 4 times for 1 A) increase the power emitted through the ground-state optical transition in comparison with that achievable with a laser diode solely being limited by the onset of lasing through an excited-state optical transition.

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Rate equations and solutions of a laser-diode end-pumped passively Q-switched intracavity doubling laser by taking into account intracavity laser spatial distribution

Optics Communications ◽

10.1016/j.optcom.2004.02.013 ◽

2004 ◽

Vol 234 (1-6) ◽

pp. 321-328 ◽

Cited By ~ 38

Author(s):

Guiqiu Li ◽

Shengzhi Zhao ◽

Hongming Zhao ◽

Kejian Yang ◽

Shuanghong Ding

Keyword(s):

Spatial Distribution ◽

Laser Diode ◽

Rate Equations ◽

Intracavity Laser

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Gas-phase ozonolysis of β-ocimene: Temperature dependent rate coefficients and product distribution

Atmospheric Environment ◽

10.1016/j.atmosenv.2016.09.053 ◽

2016 ◽

Vol 147 ◽

pp. 46-54 ◽

Cited By ~ 1

Author(s):

Elizabeth Gaona-Colmán ◽

María B. Blanco ◽

Ian Barnes ◽

Mariano A. Teruel

Keyword(s):

Gas Phase ◽

Product Distribution ◽

Rate Coefficients ◽

Temperature Dependent ◽

Dependent Rate

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Evaluation of Luminescence Decay Measurements Probed on Pure and Doped Pt(IV) Hexahalogeno Complexes. II. Molecular Properties Obtained from Temperature Dependent Lifetime Curves

Zeitschrift für Naturforschung A ◽

10.1515/zna-1997-0513 ◽

1997 ◽

Vol 52 (5) ◽

pp. 447-456

Author(s):

Ingo Biertümpel ◽

Hans-Herbert Schmidtke

Keyword(s):

Excited States ◽

Ground State ◽

Energy Levels ◽

Decay Rates ◽

Rate Equations ◽

Temperature Dependent ◽

Lifetime Measurements ◽

Thermally Activated ◽

Ground State Energies ◽

Higher Excited States

Abstract Lifetime measurements down to nearly liquid helium temperatures are used for determining energy levels and transition rates between excited levels and relaxations into the ground state. Energies are obtained from temperature dependent lifetimes by fitting experimental curves to model functions pertinent for thermally activated processes. Rates are calculated from solutions of rate equations. Similar parameters for pure and doped Pt(IV) hexahalogeno complexes indicate that excited levels largely belong to molecular units. Some of the rates between excited states are only somewhat larger than decay rates into the ground state, which is a consequence of the polyexponential decay measured also at low temperature (2 K). In the series of halogen complexes, the rates between spinorbit levels resulting from 3T1g increase from fluorine to bromine, although energy splittings become larger. Due to the decreasing population of higher excited states in this series, K^PtFö shows a tri-exponential, K2PtCl6 a bi-exponential and FoPtBr6 a mono-exponential decay. In the latter case the population density of higher excited states relaxes so fast that emission occurs primarily from the lowest excited Γ3(3T1g) level. Phase transitions and emission from chromophores on different sites can also be observed.

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Ammonia dynamic modelling over Cu-SSZ-13 catalyst for NOx emission control in diesel vehicles

Reaction Chemistry & Engineering ◽

10.1039/d0re00253d ◽

2020 ◽

Vol 5 (9) ◽

pp. 1824-1832

Author(s):

Biao Liu ◽

Dongwei Yao ◽

Feng Wu ◽

Xiaohan Hu ◽

Yuxi Li ◽

...

Keyword(s):

Emission Control ◽

Dynamic Modelling ◽

Nox Emission ◽

Temperature Dependent ◽

Storage Mechanism ◽

Site Model ◽

Model Based ◽

Diesel Vehicles ◽

Ammonia Storage ◽

Dual Site

Based on the ammonia storage mechanism over Cu-SSZ-13 catalyst, a temperature-dependent heterogeneity constant was introduced in the dual-site model, and was compared with traditional dual-site and multi-site model based on a series NH3-TPD tests in this work.

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