Sub-50-femtosecond high-peak-power pulses from a regeneratively initiated self-sustained continuous-wave mode-locked chromium-doped forsterite laser

1993 ◽  
Author(s):  
Howard Nathel ◽  
Alphan Sennaroglu ◽  
Clifford R. Pollock
Keyword(s):  
Peak Power ◽  
Continuous Wave ◽  
Wave Mode ◽  
High Peak ◽  
High Peak Power ◽  
Continuous Wave Mode

Stable continuous-wave mode-locked laser from a 1645 nm Er:YAG ceramic oscillator

2022 ◽  
Author(s):  
Yangyu Liu ◽  
Xue Cao ◽  
AnHua Xian ◽  
Guangmiao Liu ◽  
Wei zhou ◽  
...  
Keyword(s):  
Solid State ◽  
Pulse Width ◽  
Peak Power ◽  
Continuous Wave ◽  
Modulation Depth ◽  
Average Power ◽  
Mode Locking ◽  
Wave Mode ◽  
Semiconductor Saturable Absorber ◽  
Continuous Wave Mode

Abstract We demonstrate stable continuous-wave mode-locking (CWML) pulses around 1645nm by employing the home-made Er:YAG ceramic. By using a fiber laser and semiconductor saturable absorber mirror (SESAM) with modulation depth of 1.2%, we get ML pulses with the output average power up to 815 mW, the pulse width shortened as ~4 ps, and the peak power of 1.8 kW. With the SESAM of modulation depth of 2.4%, the second-order harmonic ML pulses were also obtained. As far as we know, this is the first report of CWML from Er3+-doped ceramics and also the shortest pulse duration in Er3+-doped solid-state oscillators.

Comparison of dose dependences for bioeffects of continuous-wave and high-peak power microwave emissions using gel-suspended cell cultures

2002 ◽  
Vol 23 (2) ◽  
pp. 158-167 ◽  
Author(s):  
Andrei G. Pakhomov ◽  
Peter Gaj?ek ◽  
Lori Allen ◽  
Bruce E. Stuck ◽  
Michael R. Murphy
Keyword(s):  
Cell Cultures ◽  
Peak Power ◽  
Continuous Wave ◽  
High Peak ◽  
High Peak Power ◽  
Suspended Cell ◽  
Power Microwave ◽  
Microwave Emissions

Thrombus formation using endovenous lasers: an in vitro experiment

2013 ◽  
Vol 29 (3) ◽  
pp. 171-178 ◽  
Author(s):  
T Hennings ◽  
D Hennings ◽  
C Lindsay
Keyword(s):  
Peak Power ◽  
Continuous Wave ◽  
Thrombus Formation ◽  
High Peak ◽  
Yttrium Aluminium Garnet ◽  
High Peak Power ◽  
Vein Wall ◽  
Yttrium Aluminium ◽  
Power Densities

Objectives: The purpose of these experiments was to simulate thrombus formation during endovenous laser closure by measuring coagulum formation of in vitro laser exposures in porcine blood and investigate the role of procedures and equipment in thrombus formation. Methods: Continuous wave 810, 940, 980, 1310 and 1470 nm lasers and microsecond pulsed wave 1064 nm Nd:YAG (neodymium-doped yttrium aluminium garnet), 1320 nm Nd:YAG and 2100 nm THC:YAG (thulium holmium chromium-doped yttrium aluminium garnet) lasers were tested with standard fibres with diameters of 365, 550 and 600 μm as well as two prototype modified tip fibres. Results: The results show that pulsed lasers with high-peak power densities form less coagulum. Fibre specifications were found not to influence coagulum formation, and prototype modified tip fibres designed to prevent contact between the fibre tip and the vein wall did not eliminate coagulum formation. Conclusion: Microsecond-pulsed wave lasers with high-peak power densities may be a better choice to minimize soft thrombus formation during endovenous laser ablation treatments.

Investigations on fibers for high-peak power pulsed Nd:YAG-lasers for laser detonator

2008 ◽  
Author(s):  
Yang Gao ◽  
Xing-hai Zhao ◽  
Wei Su ◽  
Yong-sheng Cheng ◽  
Mei-jian Xu ◽  
...  
Keyword(s):  
Peak Power ◽  
High Peak ◽  
High Peak Power ◽  
Nd:Yag Lasers
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