Ultrahigh resolution spectral analysis based on a Brillouin fiber laser.

We report what we believe to be a novel experimental heterodyne technique for the spectral analysis of continuous optical wave sources. The achieved resolution is as low as the kilohertz level, with a dynamic range in excess of 90 dB. The technique is based on a heterodyne detection between the source under test (SUT) and a Brillouin fiber laser generated by this SUT.

Comparative study of wavelengths for laser lipolysis.

Objective: This aim of this study was to evaluate the role of different wavelengths (920 nm, 980 nm, 1064 nm, 1320 nm, and 1440 nm) in laser lipolysis.

Background: Laser lipolysis is fast becoming a recognized technique for fat reduction. It has been demonstrated that (i) fat liquefaction is induced through a temperature elevation of the adipocyte cells, and (ii) fat volume reduction depends on total cumulative energy delivered at the treatment site.

Mathematical modeling of laser lipolysis.

Background And Objectives: Liposuction continues to be one of the most popular procedures performed in cosmetic surgery. As the public's demand for body contouring continues, laser lipolysis has been proposed to improve results, minimize risk, optimize patient comfort, and reduce the recovery period. Mathematical modeling of laser lipolysis could provide a better understanding of the laser lipolysis process and could determine the optimal dosage as a function of fat volume to be removed.

Periodic mode hopping induced by thermo-optic effects in continuous-wave optical parametric oscillators.

We show that thermal effects can lead to periodic mode hopping in cw optical parametric oscillators (OPOs). This mode hopping may occur as soon as two modes have different intensities at the point where they exchange their stability; this condition is easily fulfilled in OPOs that are triply resonant, or doubly resonant with a weakly resonant pump. We have observed such oscillations experimentally in a type II OPO in both configurations.

A new method for Intra Ocular Pressure in vivo measurement: first clinical trials.

Glaucoma is an ocular disease clinically manifested by an abnormal rise of the Intra Ocular Pressure (IOP) that causes lesions of the optic nerve and can lead to blindness. Ophthalmologists currently use applanation tonometers whose utilization induces multiple constraints. We propose an investigative method being at one and the same time atraumatic and ambulatory.