Coupled-mode equations for monolithic semiconductor ring lasers: numerical simulations and experimental results

2004 ◽  
Author(s):  
G. Giuliani ◽  
R. Miglierina ◽  
S. Donati ◽  
A. Scire ◽  
S. Balle ◽  
...  
Keyword(s):  
Numerical Simulations ◽  
Experimental Results ◽  
Coupled Mode ◽  
Ring Lasers ◽  
Semiconductor Ring Lasers

scholarly journals Noise properties of semiconductor ring lasers

2008 ◽  
Author(s):  
Antonio Pérez S. ◽  
Roberta Zambrini ◽  
Alessandro Scirè ◽  
Pere Colet
Keyword(s):  
Ring Lasers ◽  
Semiconductor Ring Lasers

Additive manufacturing of pure copper: From numerical simulations to experimental results

2021 ◽  
Author(s):  
Hagen Kohl ◽  
Lisa Schade ◽  
Gabor Matthäus ◽  
Tobias Ullsperger ◽  
Burak Yürekli ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Numerical Simulations ◽  
Pure Copper ◽  
Experimental Results

Manipulating frequency comb regimes in semiconductor ring lasers

2021 ◽  
Author(s):  
Dmitry Kazakov ◽  
Marco Piccardo ◽  
Benedikt Schwarz ◽  
Nikola Opacak ◽  
Maximilian Beiser ◽  
...  
Keyword(s):  
Frequency Comb ◽  
Ring Lasers ◽  
Semiconductor Ring Lasers

Effect of Ramp Angle on the Anti-Loosening Ability of Wedge Self-Locking Nuts Under Vibration

2018 ◽  
Vol 140 (7) ◽  
Author(s):  
Jianhua Liu ◽  
Hao Gong ◽  
Xiaoyu Ding
Keyword(s):  
Finite Element ◽  
Numerical Simulations ◽  
Production Technology ◽  
Material Properties ◽  
Threshold Value ◽  
Commercial Production ◽  
Experimental Results ◽  
Fe Method ◽  
Transversal Vibration

Recently, the wedge self-locking nut, a special anti-loosening product, is receiving more attention because of its excellent reliability in preventing loosening failure under vibration conditions. The key characteristic of a wedge self-locking nut is the special wedge ramp at the root of the thread. In this work, the effect of ramp angle on the anti-loosening ability of wedge self-locking nuts was studied systematically based on numerical simulations and experiments. Wedge self-locking nuts with nine ramp angles (10 deg, 15 deg, 20 deg, 25 deg, 30 deg, 35 deg, 40 deg, 45 deg, and 50 deg) were modeled using a finite element (FE) method, and manufactured using commercial production technology. Their anti-loosening abilities under transversal vibration conditions were analyzed based on numerical and experimental results. It was found that there is a threshold value of the initial preload below which the wedge self-locking nuts would lose their anti-loosening ability. This threshold value of initial preload was then proposed for use as a criterion to evaluate the anti-loosening ability of wedge self-locking nuts quantitatively and to determine the optimal ramp angle. Based on this criterion, it was demonstrated, numerically and experimentally, that a 30 deg wedge ramp resulted in the best anti-loosening ability among nine ramp angles studied. The significance of this study is that it provides an effective method to evaluate the anti-loosening ability of wedge self-locking nuts quantitatively, and determined the optimal ramp angle in terms of anti-loosening ability. The proposed method can also be used to optimize other parameters, such as the material properties and other dimensions, to guarantee the best anti-loosening ability of wedge self-locking nuts.

scholarly journals Numerical Simulations of V-Shaped Plates Subjected to Blast Loadings: A Validation Study

2016 ◽  
Vol 10 (11) ◽  
pp. 203
Author(s):  
Mohd Zaid Othman ◽  
Qasim H. Shah ◽  
Muhammad Akram Muhammad Khan ◽  
Tan Kean Sheng ◽  
M. A. Yahaya ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Numerical Simulations ◽  
Variable Mass ◽  
Blast Loading ◽  
Experimental Results ◽  
Average Difference ◽  
Simulation Results ◽  
Blast Loadings ◽  
Carrier Vehicle ◽  
Good Agreement

A series of numerical simulations utilizing LS-DYNA was performed to determine the mid-point deformations of V-shaped plates due to blast loading. The numerical simulation results were then compared with experimental results from published literature. The V-shaped plate is made of DOMEX 700 and is used underneath an armour personal carrier vehicle as an anti-tank mine to mitigate the effects of explosion from landmines in a battlefield. The performed numerical simulations of blast loading of V-shaped plates consisted of various angles i.e. 60°, 90°, 120°, 150° and 180°; variable mass of explosives located at the central mid-point of the V-shaped vertex with various stand-off distances. It could be seen that the numerical simulations produced good agreement with the experimental results where the average difference was about 26.6%.

Frequency beating between monolithically integrated semiconductor ring lasers

2005 ◽  
Vol 86 (4) ◽  
pp. 041101 ◽  
Author(s):  
Hongjun Cao ◽  
Chiyu Liu ◽  
Hai Ling ◽  
Hui Deng ◽  
Marcita Benavidez ◽  
...  
Keyword(s):  
Monolithically Integrated ◽  
Ring Lasers ◽  
Semiconductor Ring Lasers

scholarly journals All-optical two-mode switching in semiconductor ring lasers

2006 ◽  
Author(s):  
Alessandro Scirè ◽  
Marc Sorel ◽  
Guido Giuliani ◽  
Pere Colet ◽  
Toni Pérez ◽  
...  
Keyword(s):  
Mode Switching ◽  
Ring Lasers ◽  
All Optical ◽  
Semiconductor Ring Lasers
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