Optical fibers with enhanced performance for excimer laser power transmission at 308 nm

Author(s):  
Heinz Fabian ◽  
Ulrich Grzesik ◽  
Georg Hillrichs ◽  
Walter Neu
1992 ◽  
Author(s):  
Johannes Tschepe ◽  
Gerhard J. Mueller ◽  
Lev Nagli ◽  
Alla German ◽  
Abraham Katzir

Author(s):  
Z H Cui ◽  
W S Hua ◽  
X G Liu ◽  
T Guo ◽  
Y Yan

2001 ◽  
Vol 685 ◽  
Author(s):  
Minghong Lee ◽  
Seungjae Moon ◽  
Mutsuko Hatano ◽  
Costas P. Grigoropoulos

AbstractA new double laser recrystallization technique that can produce lateral grains of tens of micrometers is presented. A nanosecond laser (excimer or Nd:YLF laser) and a pulse modulated Ar+ laser are used in the experiment. The effect of different parameters on lateral grain growth is investigated. These parameters include the time delay between the two lasers, the excimer laser fluence, the Ar+ laser power and the pulse duration. This process has wide process window and is insensitive to both the excimer laser fluence and the Ar+ laser power fluctuations. Preheating and melting of the a-Si film with the Ar+ laser before firing the excimer laser is found to be necessary for inducting lateral grain growth. The transient excimer laser irradiation is believed to generate nucleation sites for initiating the subsequent lateral grain growth. The solidification dynamics of the process is probed by high spatial and temporal resolution laser flash photography. A lateral solidification velocity of about 10 m/s is observed.


1985 ◽  
Vol 17 (4) ◽  
pp. 213-214 ◽  
Author(s):  
V.S. Alejnikov ◽  
V.G. Artjushenko ◽  
V.P. Belyaev ◽  
V.V. Vojtsekhovsky ◽  
E.M. Dianov ◽  
...  

1994 ◽  
Vol 374 ◽  
Author(s):  
Daniel J. Sandman ◽  
Jeffrey L. Conroy ◽  
Joseph Piche

AbstractIn the interest of finding useful materials systems for optical limiting, we have sought to combine the attractive third order nonlinear optical properties of polydiacetylenes (PDA) with the desirable ballistic and mechanical properties of polycarbonates in our study of two different systems. Composites of Lexan polycarbonate with the PDA from 1,6-di-N-carbazolyl-2,4-hexadiyne have attractive laser power transmission characteristics. Macromonomers derived from the chloroformates of bis -phenols A and F and diacetylene diols were synthesized, their spectral, molecular weight, and thermal properties were studied, and the crosslinking of the macromonomers to PDA structures was investigated.


1984 ◽  
Vol 20 (23) ◽  
pp. 983 ◽  
Author(s):  
V.G. Artjushenko ◽  
V.V. Voitsekhovsky ◽  
V.J. Masychev ◽  
J.V. Zubov ◽  
V.K. Sysoev

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