Intensity–phase characterization of white-light continuum generated in sapphire by 280 fs laser pulses at 1053 nm

2012 ◽  
Vol 14 (3) ◽  
pp. 035201 ◽  
Author(s):  
Tayyab Imran ◽  
Gonçalo Figueira
Keyword(s):  
White Light ◽  
Laser Pulses ◽  
White Light Continuum ◽  
Fs Laser ◽  
Phase Characterization

Fabrication and Characterization of Si Nano-Columns by Femtosecond Laser

2012 ◽  
Vol 16 ◽  
pp. 15-20 ◽  
Author(s):  
Omid Tayefeh Ghalehbeygi ◽  
Vural Kara ◽  
Levent Trabzon ◽  
Selcuk Akturk ◽  
Huseyin Kizil
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Laser Beam ◽  
Chemical Etching ◽  
Silicon Surface ◽  
Laser Pulses ◽  
Laser Beam Profile ◽  
Fs Laser ◽  
Fabrication And Characterization

We fabricated Si Nano-columns by a femtosecond laser with various wavelengths and process parameters, whilst the specimen was submerged in water. The experiments were carried out by three types of wavelengths i.e. 1030 nm, 515nm, 343nm, with 500 fs laser pulses. The scales of these spikes are much smaller than micro spikes that are constructed by laser irradiation of silicon surface in vacuum or gases like SF6, Cl2. The Si nano-columns of 300 nm or less in width were characterized by SEM measurements. The formation of these Si Nano-columns that were revealed by SEM observation, indicates chemical etching with laser ablation occurred when surface exposed by laser beam. We observed 200 nm spikes height at the center of laser beam profile and the ones uniform in height at lateral incident area.

Compact laser source for high-power white-light and widely tunable sub 65 fs laser pulses

2010 ◽  
Vol 35 (23) ◽  
pp. 3961 ◽  
Author(s):  
Bernd Metzger ◽  
Andy Steinmann ◽  
Felix Hoos ◽  
Sebastian Pricking ◽  
Harald Giessen
Keyword(s):  
White Light ◽  
High Power ◽  
Laser Pulses ◽  
Laser Source ◽  
Fs Laser

Characterization of high-intensity sub-4-fs laser pulses using spatially encoded spectral shearing interferometry

2011 ◽  
Vol 36 (9) ◽  
pp. 1680 ◽  
Author(s):  
Tobias Witting ◽  
Felix Frank ◽  
Christopher A. Arrell ◽  
William A. Okell ◽  
Jonathan P. Marangos ◽  
...  
Keyword(s):  
High Intensity ◽  
Laser Pulses ◽  
Shearing Interferometry ◽  
Fs Laser
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