In article number 2006819, Chien-Chih Lai and co-workers report the first demonstration of a diode-pumped ultralow-threshold continuous-wave room-temperature perovskite laser, by coating MAPbI3 nanocrystallites onto high-quality yttrium aluminum garnet (YAG) crystal fiber. The atomically smooth fiber not only serves as perfect microcavity for ultralow-loss optical resonance but also facilitates...

INTRODUCTION The Q-switched 1064-nm laser is associated with rapid vaporization and thermal expansion stresses leading to skin mechanical damage and is typically used for correction of exogenous and endogenous deep pigmentation. Giving the common place of fractional, infrared-domain milliseconds non-ablative lasers in aesthetic dermatology, a novel non-ablative fractional Q-switched 1,064-nm la...

BACKGROUND Lasers have recently become very useful for epiduroscopy. As the use of lasers increases, the potential for unwanted complications with direct application of laser energy to nerve tissue has also increased. Even using the lowest laser power to test for nerve stimulation, there are still risks of laser ablation. However, there are no studies investigating tissue damage from laser proc...

The past decade has seen a veritable explosion of research into the clinical applications of lasers in dentistry. Although lasers were once regarded as complex technology of limited use in clinical dentistry, dentists have becoming increasingly aware of the usefulness of lasers in the armamentarium of the modern dental practice, where they can be used as an adjunct or alternative to traditional...

Although common acquired melanocytic nevi are largely benign, they are probably one of the most common indications for cosmetic surgery encountered by dermatologists. With recent advances, noninvasive tools can largely determine the potential for malignancy, although they cannot supplant histology. Although surgical shave excision with its myriad modifications has been in vogue for decades, the...

background: based on contradictory findings concerning the use of lasers for enamel etching, the purpose of this study was to investigate the shear bond strength of teeth prepared for bonding with er-yag laser etching and compare them with phosphoric acid etching. materials and methods: in this in vitro study forty – eight premolars, extracted for orthodontic purposes were randomly divided in t...

Yttrium aluminum perovskite (YAP) co-doped with CI3' and Nd3+ is of interest in laser applications because the chromium-neodymium energy transfer is more efficient in YAP than in YAG. Investigation of the energy transfer from the chromium R lines and pair states in the wavelength range 720-740 nm to the Nd3+ upper laser level shows that neither individual C? ions nor C?+-C? pairs are important ...