Design aspects of medical laser devices

Fundamentals and applications of medical lasers for various clinical procedures including dermatology and plastic surgery, wound healings, nerve stimulation, dentistry, cancer therapy, and ophthalmic surgeries were reviewed recently [1]. The laser spectra of UV (190400) um, visible (400-700) nm, near-IR (700-2900) nm, and mid-IR (3-5) um having various penetration depths (from determine the procedures are thermal or non-thermal or combined effect. invasive or noninvasive. Diode lasers have been widely used in many surgical procedures including soft tissue cutting, coagulation and cancer thermal therapy. Various photosensitizers are presented in matching the laser absorption wavelengths. Lasers have been used for various medical procedures including dermatology, plastic surgery, wound healings, nerve stimulation, dentistry, ophthalmology and many other therapeutic and surgical procedures [1]. Combining the nanoparticles and photosensitizers, diode lasers have been also used for cancer diagnosis and therapy [2-4]. The key design aspects for medical laser devices, including: (i) the selection of laser wavelength; (ii) the control penal functions; (iii) the energy delivery means, and (iv) the efficacy of the devices will be analyzed.