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Showing 1 to 11 of 11 for “"high power lasers"”.
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The study of photo-thermal lensing system and its applications
The high quality optical films in coatings with low absorption and good environmental stability are required for the development of high power lasers, because even slightest absorbing defects could lead to material's breakdown. Thus, a non-destructive absorption measurement is required to measure …
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Development of a plasmon resonance enhanced optical trap for characterisation of single metal nanoparticle
… trapping setup or trap single gold nanorod using high power lasers, none were found that suggests on constructing a plasmon resonance based optical trapping setup which has the sole purpose of tweezing and characterizing a particular species (aspect ratio) of gold nanorod. Theoretical aspects of …
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Computational study of hot electron generation and energy transport in intense laser produced hot dense matter
Present ultra high power lasers are capable of producing high energy density (HED) plasmas, in controlled way, with a density greater than solid density and at a high temperature of keV (1 keV ~ 11,000,0000 K). Matter in such extreme states is par- ticularly interesting for (HED) physics such as …
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Transverse mode selection and brightness enhancement in laser resonators by means of volume Bragg gratings
The design of high power lasers requires large mode areas to overcome various intensity driven nonlinear effects. Increasing the aperture size within the laser can overcome these effects, but typically result in multi-transverse mode output and reduced beam quality, limiting the brightness of the …
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Mitigated Motion-Induced Signal Loss and Enabled Refractive Index Measurement in Optical Coherence Tomography
… monitoring of metallic welding conducted with high-power lasers, where OCT can detect weld depth in real-time. Despite this ability, OCT is known to lose signal when measuring moving objects. Since laser welding is volatile and prone to sporadic motion, it is hypothesized that signal is lost …
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Efficient, high-power operation of CW Yb:YAG and Q-switched Nd:YAG planar waveguide lasers
… gain medium o ers a good approach to creating a high- power lasers. Excellent thermal properties allow for lasers with good beam-quality and high-e ciency. A Neodymium doped YAG planar waveguide laser was actively Q-switched using a hybrid unstable resonator and acousto-optic modulator. A Yt- …
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A sensor for combustion thermometry based on blue diode lasers.
… temperature have been demonstrated with diode lasers for the first time. The technique is based on the use of blue diode lasers to perform laser-induced fluorescence on indium atoms seeded to the flame. Temperature measurements have been carried out in laminar flames both by the two-line atomic …
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Multispecies ion acceleration from intense laser interactions with thin foils
… accelerators at currently available, and future, high power lasers. The second approach indicates the enhancement of radiation pressure accelerated ions in temporally stretched pulses, with a lower peak intensity, by measuring both higher ion energies and a greater red-shift in the back reflected …
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High-power cladding-pumped Raman and erbium-ytterbium doped fibre sources
… for that application. It is only recently that power scaling of fibre laser sources has taken place with the development of double-clad fibres and high power laser diode pump sources. Cladding-pumped fibre lasers are now a rapidly expanding and emerging technology with a wide range of …
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Dispersion-managed Breathing-mode Semiconductor Mode-locked Ring Laser
… The intracavity pulse compression ratio is higher than 50. Down chirping when compared to up chirping allows broader mode-locked spectra and shorter pulse generation owing to temporal and spectral semiconductor gain dynamics. Pulses as short as 185 fs, with a peak power of ~230 w, and a …