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We demonstrate a burst-mode Yb all-fiber femtosecond laser system integrated with OCT for cataract surgery and aim to enhance further the procedure with lower collateral tissue damage, cleaner, efficient cuts with compact and robust structure.
There are a number of applications that would avail a pulse pattern in the form of closely grouped and uniformly spaced pulses, i.e., bursts [1]. Closely grouped pulses with pulse to pulse separation in the order of a few nanoseconds have a potential for increasing material removal rates [2] and thereby reducing the thermal effects. Besides, keeping the burst repetition period in the order of thermal...
We report 57kW of peak power, 4µJ of energy and nonlinear shift of ∼22π at 1MHz repetition rate, the highest from an all-fiber-integrated amplifier, limited by Raman amplification. Numerical simulations provide good agreement with experiments.
We report formation of polarization-dependent nanostructures (nanolines, nanocircles) by high repetition-rate femtosecond laser pulses on titanium surface through a novel mechanism, converting Ti to TiO2. Arbitrarily large-area patterns are created by self-stitching of these patterns.
Controlled modification of implant surfaces using femtosecond, picosecond and nanosecond pulses from home-built all-fiber-integrated lasers is demonstrated. Picosecond and femtosecond pulses offer superior control over the surface texture. Increasing cell attachment to surface is discussed.
We report a robust, all-fiber amplifier seeded by a fiber oscillator. Seed pulses at 1 MHz repetition rate are amplified up to 3 muJ, delivering 1 muJ-energy, 170 fs-long pulses. Duration reduces to 120 fs at 1 muJ amplifier output. These are the highest peak powers from an integrated fiber source.
Modulated and continuous-wave (CW) operations of thulium (Tm:YAP) laser are compared for tissue welding by histology analysis study. Higher thermal effects but better closure on skin samples is obtained for CW mode.
In this study, a Tm:YAP laser system with power output up to 1 W and emission wavelength of 1980 nm was established and its ablation parameters on Wistar rat skin tissues were analyzed to determine the optimum skin ablation dose.
Laser skin welding is an invasive method of bonding skin tissues by temperature increase due to laser energy. In this study, a continuous-wave Tm:YAP laser at 1980 nm was designed as a versatile laser system for laser tissue welding. Due to higher water absorption near 1980 nm, lower power levels of Tm:YAP lasers (compared to smaller wavelength lasers) are enough for tissue welding and no solder is...
Laser tissue welding predosimetry studies are performed on Wistar rat skin by using diode-pumped and fiber-coupled Thulium (Tm:YAP) laser system emitting at 1980 nm, which is developed for medical applications. The success of laser tissue welding at 100 mW ve 160 mW of Tm:YAP laser powers is analyzed by macroscopy and histology results. Tm:YAP laser dosimetry of 100 mW, 5 second (34,66 W/cm2) is found...
We report on the first observation of lasing in bulk Nd3+-doped (0.8)TeO2-(0.2)WO3 glass at 1065 nm. Gain-switched operation was obtained with a slope efficiency of 12% at a pulse repetition rate of 1 kHz.
We report laser emission from single, stationary, Rhodamine B-doped glycerol/water microdroplets located on a superhydrophobic surface. In the experiments, a pulsed, frequency-doubled Nd:YAG laser operating at 532nm was used as the excitation source. The microdroplets ranged in diameter from a few to 20μm. Lasing was achieved in the red-shifted portion of the dye emission spectrum with threshold fluences...
Optical microcavities are attractive in developing ultralow threshold lasers which hold a great promise for applications in optical communications systems and fundamental studies in cavity quantum electrodynamics. Up to date laser emission has been observed from various different optical microcavities: Microdisks, microspheres, micropillars, photonic crystal defect microcavities, and microdroplets...
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