Introduction: The use of lasers for treatment has become a common phenomenon in the medical field. Currently, numerous laser systems are available for dental use. The use of lasers for periodontal treatment becomes more complicated because the periodontium consists of both hard and soft tissues. Methods: Related articles were gathered and selected carefully and reviewed. Among the many lasers a...

High power, high brightness diode lasers are beginning to compete with solid state lasers, i.e. disk and fiber lasers. The core technologies for brightness scaling of diode lasers are optical stacking and dense spectral combining (DSC), as well as improvements of the diode material. Diode lasers have the lowest cost of ownership, highest efficiency and most compact design among all lasers. Mult...

The rouge waves in an optically injected semiconductor lasers are receiving a lot of interest. In this work, the generating and controlling of the rogue waves in semiconductor lasers have been investigated. For this purpose, the laser’s rate equations are solved numerically in a specified time interval, then the field amplitude and the intensity versus time are calculated and analyzed. To solve...

Lasers are widely used in various manufacturing processes. In order to achieve sustainable production, it is important reduce the environmental impact caused by laser operation. One major improvement step from gas lasers diode lasers.

The dynamics of two mutually coupled chaotic diode lasers are investigated experimentally and numerically. By adding self-feedback to each laser, stable isochronal synchronization is established. This stability, which can be achieved for symmetric operation, is essential for constructing an optical public-channel cryptographic system. The experimental results on diode lasers are well described ...

A 780-nm-band integrated tunable two-wavelength AlGaAs DBR laser with PN junction heaters was designed and fabricated. Tunable coherent THz wave generation in 0.8-1.2 THz using GaAs photomixers was demonstrated. Keywords-component; DBR lasers; two-wavelength lasers; tunalbe lasers; integrated optoelectoronics; THz-wave generation

Articles you may be interested in λ ∼ 3.1 μ m room temperature InGaAs/AlAsSb/InP quantum cascade lasers Appl. Above room temperature operation of short wavelength (λ = 3.8 μ m) strain-compensated In 0.73 Ga 0.27 As – AlAs quantum-cascade lasers Appl. Lasing properties of GaAs/(Al,Ga)As quantum-cascade lasers as a function of injector doping density Appl.

Solid-state Raman lasers are known as important sources at normally difficult to access wavelengths, and our recent studies have shown that they also form the basis of a class of wavelength selectable lasers. This paper summarizes our recent studies in wavelength selectable Raman lasers in the visible (532-650 nm) and ultraviolet (266-321 nm).

We present measurements of relative intensity noise versus various levels of optical feedback for 1.3 μm quantum dot lasers epitaxially grown on silicon for the first time. A systematic comparison is made with heterogeneously integrated 1.55 μm quantum well lasers on silicon. Our results indicate up to 20 dB reduced sensitivity of the quantum dot lasers on silicon compared to the quantum wells.

treatment protocols with low-level laser (also called ‘soft laser therapy) have been used in health care systems for more than three decades. bearing in mind the suitable sub-cellular absorption and the cellular-vascular impacts, low-level laser may be a treatment of choice for soft tissues. low-level lasers have played crucial and colorful roles in performing periodontal surgeries. their anti-...