Coordinate measurement machine (CMM) probing techniques can involve direct mechanical contact (e.g., tactile probing) or diverse non-contact principles (e.g., laser line scan probing). For some applications, contact methods are not capable of measuring fast enough to ensure 100% quality controlled parts. A laser line scanning probe uses a laser triangulation-based method to acquire 3D measureme...

Laser pulse nonlinear transmission measurements through saturable absorbers of known absorption parameters allow the measurement of their energy density. On the other hand, nonlinear transmission measurements of laser pulses of known energy density through absorbing media allow their absorption parameter determination. The peak energy density w0P of second harmonic pulses of a mode-locked titan...

Photothermal therapy is an effective means to induce tumor cell death, since tumor tissue is more sensitive to temperature increases than normal tissue. Biological responses depend on tissue temperature; target tissue temperature needs to be precisely measured and controlled to achieve desired thermal effects. In this work, a unique photoacoustic (PA) sensor is proposed for temperature measurem...

In this paper, we present a method for 3D volumetric reconstruction of landscape from airborne laser scanner data. The method applies a voxel model, where volume is divided to sub-volume particles, voxels, associated with a scalar or vector value. In the presented study the voxel model is generated from airborne laser scanner data, which enables measurement of large areas. Laser scanning provid...

Permission is granted to quote short excerpts and to reproduce figures and tables from this report, provided that the source of such material is fully acknowledged. Abstract. This paper focuses on the characteristics and performance of an eye-safe laser range scanner (LARS) with short-and medium-range 3-D sensing capabilities for space applications. This versatile LARS is a precision measuremen...

Laser coagulation is a minimally invasive therapy that utilizes laser energy to thermally kill benign and malignant lesions such as cancers, at the temperature range of 55± 85°C. It is of clinical importance to control the laser deposition into the tissue in such a way that the lesion will be destroyed while the surrounding healthy tissue will remain intact. However, a primary technical dicult...

introduction: the aim of this study was to evaluate the morphological changes and quantitatively assess the roughness of dentin after the ablation with a ytterbium-doped potassium yttrium tungstate (yb: kyw) thin-disk femtosecond pulsed laser of different fluences, scanning speeds and scanning distances. method: twelve extracted human premolars were sectioned into crowns and roots along the cem...

We developed a novel method of measurement of the dynamic light scattering phase function of particles utilizing laser Doppler technique. We show the theoretical background, validation carried out on Monte Carlo data and proposition of measurement setup. OCIS codes: (290.5820) Scattering measurements; (170.3660) Light propagation in tissues, (170.5280) Photon migration, (170.3340) Laser Doppler...

The M2 factor has become a popular and important parameter, used to characterize the quality of a laser beam. A procedure for making an accurate M2 measurement of a laser is developed and described. Also discussed are several methods of measurement which did not yield adequate results.

2014 We describe here a systematic error that appears in Michelson’s type lambdameters when the measured laser is tuned during the measurement. Revue Phys. Appl. 21 (1986) 463-465 AOÛT 1986, Classification Physics Abstracts 07 . 60L 07 . 65 Tome 21 No 8 AOUT 1986 We want to describe here a systematic error of a certain type of laser lambdameters which appears when the wavelength of the laser to...