Results 241 to 250 of about 127,900 (289)
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Applied Optics, 2005
The concept of femtosecond laser speckles is put forward. The theory of a speckle pattern in light of finite bandwidth is applied to describe femtosecond laser speckles. Basic representations of the contrast and the spectral correlation of femtosecond laser speckles are presented.
Wenjun, Liu, Changhe, Zhou
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The concept of femtosecond laser speckles is put forward. The theory of a speckle pattern in light of finite bandwidth is applied to describe femtosecond laser speckles. Basic representations of the contrast and the spectral correlation of femtosecond laser speckles are presented.
Wenjun, Liu, Changhe, Zhou
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Ultrafast Phenomena, 1994
Recent advances in mode-locked solid-state lasers have resulted in pulses as short as 8.5 fs in the 800 nm region from Ti:sapphire oscillators [1]. Using similar techniques, sub-50 fs pulses [2-4] have been generated in another solid-state laser system, Cr:forsterite, which operates in the 1.2 to 1.3 μm range.
Howard Nathel +2 more
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Recent advances in mode-locked solid-state lasers have resulted in pulses as short as 8.5 fs in the 800 nm region from Ti:sapphire oscillators [1]. Using similar techniques, sub-50 fs pulses [2-4] have been generated in another solid-state laser system, Cr:forsterite, which operates in the 1.2 to 1.3 μm range.
Howard Nathel +2 more
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Femtosecond Lasers in Ophthalmology
American Journal of Ophthalmology, 2009To provide an update and review of femtosecond (FS) lasers in clinical ophthalmology.Perspective, literature review, and commentary.Selected articles from the literature and the authors' clinical and laboratory studies.The FS laser employs near-infrared pulses to cut tissue with minimal collateral tissue damage.
H Kaz, Soong, João Baptista, Malta
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Superresolved femtosecond laser ablation
Optics Letters, 2007The determinist behavior of the femtosecond ablation process allows morphing features well under the diffraction limit by utilizing the thresholding effect, down to the nanometer scale. Because there are a vast range of applications where scaling down the size of the features is a major concern, we investigate the use of superresolving pupil plane ...
MERANO, MICHELE +4 more
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Femtosecond laser-assisted keratotomy
Current Opinion in Ophthalmology, 2016To review the recent literature on femtosecond laser-assisted astigmatic keratotomy and its applications to naturally occurring as well as postoperative astigmatism in multiple settings.Femtosecond laser technology has improved the safety and efficacy of astigmatic keratotomy in the treatment of astigmatism.
Laura A, Vickers, Preeya K, Gupta
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Femtosecond Laser-Assisted Keratoplasty
American Journal of Ophthalmology, 2011T a ( w r B u r HE ACCURACY AND PREDICTABILITY OF FEMTOSECond lasers not only provides new treatment options, but also increases clinical outcomes in refractive rocedures and corneal transplantations. The most imporant advantage of femtosecond laser technology is the bility to create vertical and lamellar corneal incisions ith a limitless variety of ...
Sonia H, Yoo, Volkan, Hurmeric
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Femtosecond laser cataract surgery
Clinical & Experimental Ophthalmology, 2013Letter to the Editor ; John L ...
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Advanced Solid-State Photonics, 2005
We report the first demonstration of a high power passively mode-locked diode-pumped femtosecond laser based on an Yb3+:CaF2 crystal. Pulses of 150 fs with an average power of 0.88 W and pulse of 230 fs with an average power of 1.74 W have been produced.
A. Lucca +7 more
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We report the first demonstration of a high power passively mode-locked diode-pumped femtosecond laser based on an Yb3+:CaF2 crystal. Pulses of 150 fs with an average power of 0.88 W and pulse of 230 fs with an average power of 1.74 W have been produced.
A. Lucca +7 more
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SPIE Proceedings, 1989
The bandwidth of most excimer lasers allows the amplification of subpicosecond pulses. In this paper a novel method and experimental arrangement is reported for the generation of femtosecond pulses in the XeF, XeC1 and KrF laser wavelengths. This is based on the use of a hybrid excimer-dye laser arrangement, incorporating a twin tube excimer laser and ...
S. Szatmari, F. P. Schafer
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The bandwidth of most excimer lasers allows the amplification of subpicosecond pulses. In this paper a novel method and experimental arrangement is reported for the generation of femtosecond pulses in the XeF, XeC1 and KrF laser wavelengths. This is based on the use of a hybrid excimer-dye laser arrangement, incorporating a twin tube excimer laser and ...
S. Szatmari, F. P. Schafer
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Ultrabroadband femtosecond lasers
IEEE Journal of Quantum Electronics, 1994The exploitation of soliton-like pulse shaping mechanisms and the optimization of phase dispersion in broadband self-modelocked solid state laser oscillators have led to unprecedented advances in ultrafast laser technology. This paper reviews the basic physical mechanisms governing pulse formation and addresses the requirements for optimum performance ...
C. Spielmann +3 more
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