scholarly journals Diode-pumped continuous-wave and femtosecond Cr:LiCAF lasers with high average power in the near infrared, visible and near ultraviolet

2015 ◽  
Vol 23 (7) ◽  
pp. 8901 ◽  
Author(s):  
Umit Demirbas ◽  
Ilyes Baali ◽  
Durmus Alp Emre Acar ◽  
Alfred Leitenstorfer
Keyword(s):  
Near Infrared ◽  
Continuous Wave ◽  
Average Power ◽  
High Average Power ◽  
Near Ultraviolet ◽  
Diode Pumped

Laser therapy applications for osteoarthritis and chronic joint pain – A randomized placebo-controlled clinical trial

2012 ◽  
Vol 1 (4) ◽  
Author(s):  
Nelson Marquina ◽  
Roger Dumoulin-White ◽  
Arkady Mandel ◽  
Lothar Lilge
Keyword(s):  
Clinical Trial ◽  
Near Infrared ◽  
Continuous Wave ◽  
Laser System ◽  
Laser Diodes ◽  
Average Power ◽  
Evaluation Criteria ◽  
Adjunctive Treatment ◽  
Controlled Clinical Trial ◽  
Primary Evaluation

AbstractA randomized placebo-controlled clinical trial to evaluate an adjunctive treatment modality for pain associated with knee disorders was conducted utilizing a therapeutic laser system (low energy, non-surgical).The therapeutic laser system utilized a dual wavelength, multiple diode laser cluster probe with five super-pulsed 905 nm near-infrared (NIR) laser diodes, each emitting at 40 mW average power and four continuous wave 660 nm visible (VIS) red laser diodes, each emitting at 25 mW. It was used as an adjunctive modality providing 12 treatments, three times a week to a homogeneous patient population (n=126), in combination with standardized chiropractic techniques, to evaluate effectiveness on subjects presenting with osteoarthritis and knee pain. The primary endpoint was measured by the visual analog scale (VAS) to assess pain levels on a scale of 0–10. The success criteria for an individual patient in this study were identified as an improvement of 30% or more in the VAS from baseline to 12th treatment and/or an improvement of 20% or more in the VAS from baseline to 30-day follow-up evaluation.The data obtained in the study demonstrated that the present therapeutic laser system provided significant pain relief and osteoarthritic improvements in all primary evaluation criteria, with a statistical and clinical significance of

Continuous-wave seeded mid-IR parametric system pumped by the high-average-power picosecond Yb:YAG thin-disk laser

2015 ◽  
Author(s):  
Ondřej Novák ◽  
Martin Smrž ◽  
Taisuke Miura ◽  
Hana Turčičová ◽  
Akira Endo ◽  
...  
Keyword(s):  
Continuous Wave ◽  
Average Power ◽  
Thin Disk ◽  
High Average Power ◽  
Disk Laser ◽  
Parametric System ◽  
Thin Disk Laser

scholarly journals Deformation of partially pumped active mirrors for high average–power diode–pumped solid–state lasers

2011 ◽  
Vol 19 (9) ◽  
pp. 8413 ◽  
Author(s):  
Daniel Albach ◽  
Geoffroy LeTouzé ◽  
Jean-Christophe Chanteloup
Keyword(s):  
Solid State ◽  
Average Power ◽  
Solid State Lasers ◽  
High Average Power ◽  
Diode Pumped ◽  
Active Mirrors ◽  
Power Diode

High Average Power Laser Diode Pumped Solid-State Laser

2009 ◽  
Vol 36 (7) ◽  
pp. 1605-1618 ◽  
Author(s):  
周寿桓 Zhou Shouhuan ◽  
赵鸿 Zhao Hong ◽  
唐小军 Tang Xiaojun
Keyword(s):  
Solid State ◽  
Laser Diode ◽  
Average Power ◽  
Solid State Laser ◽  
High Average Power ◽  
Power Laser ◽  
State Laser ◽  
Diode Pumped

Surface Modification and Ablation of Insulators Using a Tunable, Picosecond Mid-Infrared Laser

1998 ◽  
Vol 526 ◽  
Author(s):  
R. F. Haglund ◽  
D. R. Ermer ◽  
A. H. Lines ◽  
M. R. Papantonakis ◽  
H. K. Park ◽  
...  
Keyword(s):  
Surface Modification ◽  
Near Infrared ◽  
Energy Content ◽  
Laser Energy ◽  
Vibrational Excitation ◽  
Average Power ◽  
Surface Modifications ◽  
Fused Silica ◽  
Laser Source ◽  
Near Ultraviolet

AbstractUltrashort-pulse lasers with fundamental wavelengths ranging from near-infrared to near-ultraviolet are increasingly being used for laser-induced surface modification of non-metallic solids. The relaxation of the initial electronic excitation into vibrational relaxation modes can produce efficient ablation and other desirable surface modifications with little collateral damage because the laser energy is deposited on a time scale much shorter than thermal diffusion times. Little is known, however, about how ultrashort pulses interact with insulators at wavelengths in the vibrational infrared. This paper describes surface modifications achieved by picosecond laser irradiation in the 2-10 lim range. The laser source was a tunable, free-electron laser (FEL) with I-ps micro-pulses spaced 350 ps apart in a macropulse lasting up to 4 μs, with an average power of up to 3 W. This unusual pulse structure makes possible novel tests of the influences vs fluence and intensity, as well as the effects of resonant vibrational excitation. As model materials systems, we studied calcium carbonate, its isoelectronic cousin sodium nitrate, and fused silica. Particularly intriguing are surface modifications achieved by tuning the laser into vibrational resonances and overtones of the target materials, or by tailoring the energy content of the pulse. The mechanisms underlying these effects, and their implications for materials-modification strategies, are discussed.

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