Results 311 to 320 of about 155,967 (379)
Some of the next articles are maybe not open access.
A Systematic Review of Picosecond Laser in Dermatology: Evidence and Recommendations
Lasers in Surgery and Medicine, 2020The use of picosecond laser in dermatology was originally focused on optimizing the removal of unwanted tattoos. Subsequent advances in this technology have broadened its clinical indications to include treatment of benign pigmented lesions, photodamage,
Douglas C Wu +3 more
semanticscholar +1 more source
Lasers in Surgery and Medicine, 2020
There have been few studies regarding the use of a picosecond‐domain laser for acne scars in Asians. This prospective study evaluated the efficacy and safety of a high‐energy 1,064 nm Nd:YAG picosecond‐domain laser for ablation and resurfacing of facial ...
Ying-Xiu Dai +3 more
semanticscholar +1 more source
There have been few studies regarding the use of a picosecond‐domain laser for acne scars in Asians. This prospective study evaluated the efficacy and safety of a high‐energy 1,064 nm Nd:YAG picosecond‐domain laser for ablation and resurfacing of facial ...
Ying-Xiu Dai +3 more
semanticscholar +1 more source
Lasers in Surgery and Medicine, 2020
Treatment of melasma with lasers remains a challenge due to its limited clinical efficacy in addition to high rates of recurrence and side effects. Recently, picosecond lasers have shown favorable results in treatment of benign pigmented lesions.
W. Manuskiatti +5 more
semanticscholar +1 more source
Treatment of melasma with lasers remains a challenge due to its limited clinical efficacy in addition to high rates of recurrence and side effects. Recently, picosecond lasers have shown favorable results in treatment of benign pigmented lesions.
W. Manuskiatti +5 more
semanticscholar +1 more source
Dermatologic Surgery, 2020
BACKGROUND Whether picosecond lasers outperform Q-switched lasers in treating pigmented lesions has not been clearly evaluated. OBJECTIVE To compare the efficacy and safety of picosecond and Q-switched lasers in treating epidermal and dermal pigmented ...
Chanida Ungaksornpairote +3 more
semanticscholar +1 more source
BACKGROUND Whether picosecond lasers outperform Q-switched lasers in treating pigmented lesions has not been clearly evaluated. OBJECTIVE To compare the efficacy and safety of picosecond and Q-switched lasers in treating epidermal and dermal pigmented ...
Chanida Ungaksornpairote +3 more
semanticscholar +1 more source
Picosecond spectroscopy using a picosecond continuum
Chemical Physics Letters, 1973Abstract This paper describes the generation of a continuum which has a time duration equal to or less than the picosecond pulse which generates it. The spectrum of the continuum is several thousand wavenumbers in width. Experimental methods are presented which enable one for the first time to conduct absorption spectroscopy measurements in the ...
G.E. Busch, R.P. Jones, P.M. Rentzepis
openaire +1 more source
Proceedings of the IEEE, 1969
The broad bandwidth and long storage lifetimes of Nd3+: glass and ruby lasers have made possible the generation of picosecond laser pulses having peak powers it excess of one gigawatt and repetition rates in the microwave range. The numerous application areas of these pulses include research in nonlinear optics, transient response of atomic and ...
A. J. DeMaria +3 more
openaire +1 more source
The broad bandwidth and long storage lifetimes of Nd3+: glass and ruby lasers have made possible the generation of picosecond laser pulses having peak powers it excess of one gigawatt and repetition rates in the microwave range. The numerous application areas of these pulses include research in nonlinear optics, transient response of atomic and ...
A. J. DeMaria +3 more
openaire +1 more source
Evolution of the Picosecond Laser: A Review of Literature
Dermatologic Surgery, 2019BACKGROUND Picosecond pulse duration lasers (PS) have altered the field of dermatology. PS were initially used in tattoo removal, to optimize efficacy and reduce side effects with nanosecond domain lasers. More recently, they have been demonstrated to be
R. Torbeck +5 more
semanticscholar +1 more source
Annales Des Télécommunications, 1997
The basic principles of new ultrafast all-optical processing devices are experimentally demonstrated. One type of device relies on the interaction between an input signal and two colliding spatial solitons of a different wavelength in a planar waveguide with third order nonlinearity. The devices which belong to the second type are based on second order
Barthélémy, Alain +5 more
openaire +1 more source
The basic principles of new ultrafast all-optical processing devices are experimentally demonstrated. One type of device relies on the interaction between an input signal and two colliding spatial solitons of a different wavelength in a planar waveguide with third order nonlinearity. The devices which belong to the second type are based on second order
Barthélémy, Alain +5 more
openaire +1 more source
Optics Letters, 1989
The reduction of the frequency-locking problem is evaluated analytically for an active laser gyroscope in which active coupling of the longitudinal modes in each direction leads to the formation of counterpropagating short pulses. With proper precautions, an important reduction of the lock-in frequency is expected.
openaire +2 more sources
The reduction of the frequency-locking problem is evaluated analytically for an active laser gyroscope in which active coupling of the longitudinal modes in each direction leads to the formation of counterpropagating short pulses. With proper precautions, an important reduction of the lock-in frequency is expected.
openaire +2 more sources
Applied Physics Letters, 1972
A simple off-axis hologram has been recorded on thin bismuth film using a train of picosecond pulses from a mode-locked Nd: glass laser. Due to the ultrashort pulse duration and temporal coherence length of the laser, a time-of-arrival principle is utilized to show the correspondence of a point on the hologram to some specific region of the object.
M.E. Fourney, D.B. Barker
openaire +1 more source
A simple off-axis hologram has been recorded on thin bismuth film using a train of picosecond pulses from a mode-locked Nd: glass laser. Due to the ultrashort pulse duration and temporal coherence length of the laser, a time-of-arrival principle is utilized to show the correspondence of a point on the hologram to some specific region of the object.
M.E. Fourney, D.B. Barker
openaire +1 more source