نتایج جستجو برای: laser stability

تعداد نتایج: 479291  

2012
Thomas Erneux EOARD GRANT

Recent experiments have explored the response of a single modeoptically injected QD laser. The experiments identify a domain ofbistability between two steady states at negative detuning and a Hopfbifurcation close to the locking threshold at positive detuning. More-over, the laser is stable for all injection levels at zero detuning. Theseobservations lead to a stability ...

Journal: :Optics letters 2000
M Horowitz C R Menyuk

Using a stability analysis based on the Lyapunov method, we study pulse dropout in an actively mode-locked fiber laser. The analysis gives a limit on the maximum pulse duration and the minimum laser power that are needed for stable operation without pulse dropout. The stability of pulse trains was studied analytically and validated numerically for different pulse shapes.

2004
Richard J. Stancliffe Christopher A. Tout Onno R. Pols

We present results of the evolution of AGB stars of 3M⊙ and 5M⊙ with solar metallicity calculated with the Eggleton stellar evolution code (stars), which has a fully implicit and simultaneous method for solving for the stellar structure, convective mixing and nuclear burning. We introduce the concept of a viscous mesh in order to improve the numerical stability of the calculations. For the 5M⊙ ...

Amirhosein Shakibamehr, Hamid Neshandar Asli, Majid Abolhasani,

Precise registering and transferring of the selected path of insertion and withdrawal of removable, partial dentures is a critical step in designing and fabricating their framework and determining the retention, stability, and support of the completed prosthesis. Many authors have addressed this issue in their studies. In this study we present a new technique for registering and reproducing par...

Journal: :Optics express 2015
Yanbing Jin Xinhuan Feng Feng Li Xudong Wang Baiou Guan Jinhui Yuan P K A Wai

In this paper, we propose to use a multi-longitudinal-mode (MLM) laser as the source of an infinite-impulse response (IIR) microwave photonic filter (MPF) to obtain GHz level free spectral range (FSR). The response function of such an IIR-MPF and the degree of coherence of the laser are discussed theoretically. The degree of coherence of the MLM laser shows a periodic structure which is signifi...

Journal: :journal of dentomaxillofacil radiology, pathology and surgery 0
majid abolhasani dental implants research center, department of prosthodontics, school of dentistry, isfahan university of medical sciences, isfahan, iran. amirhosein shakibamehr department of prosthodontics, school of dentistry, qazvin university of medical sciences, qazvin, iran hamid neshandar asli department of prosthodontics, school of dentistry, guilan university of medical sciences, guilan, iran

precise registering and transferring of the selected path of insertion and withdrawal of removable, partial dentures is a critical step in designing and fabricating their framework and determining the retention, stability, and support of the completed prosthesis. many authors have addressed this issue in their studies. in this study we present a new technique for registering and reproducing par...

Journal: :Optics express 2015
Benjamin Langdon Jonathan Garlick Xiaoming Ren Derrek J Wilson Adam M Summers Stefan Zigo Matthias F Kling Shuting Lei Christopher G Elles Eric Wells Erwin D Poliakoff Kevin D Carnes Vinod Kumarappan Itzik Ben-Itzhak Carlos A Trallero-Herrero

We demonstrate a chirped-pulse-amplified Ti:Sapphire laser system operating at 1 kHz, with 20 mJ pulse energy, 26 femtosecond pulse duration (0.77 terawatt), and excellent long term carrier-envelope-phase (CEP) stability. A new vibrational damping technique is implemented to significantly reduce vibrational noise on both the laser stretcher and compressor, thus enabling a single-shot CEP noise ...

Background: Au nanoparticles (AuNPs) exhibit very unique physiochemical and optical properties, which now are extensively studied in a range of medical diagnostic and therapeutic applications. AuNPs can be used for cancer clinical treatment with minimal invasion. On the other hand, curcumin is a polyphenol derived from turmeric which is used for medical purposes due to its anti...

Journal: :Journal of Laser Applications 2017

Journal: :Proceedings of the Institution of Civil Engineers - Structures and Buildings 2016

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