continued on page 4 continued on page 4 Theodor Hänsch makes a time measurement. Introduction Absorption spectroscopy is one of the oldest scientific methods for studying atomic and molecular structure. It is also one of the most powerful research tools for providing information about the world around us. One important application is ultrasensitive trace gas analysis, which is used in many area...

National Institute of Standards and Technology, Gaithersburg, MD 20899-0001 With the recent developments in Fourier transform infrared (FTIR) spectrometers it is becoming more feasible to place these instruments in field environments. As a result, there has been enormous increase in the use of FTIR techniques for a variety of qualitative and quantitative chemical measurements. These methods off...

A laser opto-microactuator has been proposed as an Optical Micro-Electro-Mechanical-Systems (OMEMS). The rotational or twisting mechanisms of the microactuator have been discussed. For increasing the sensitivity of the actuator, the temperature difference between the front and rear blade surfaces of the actuator should be increased. Therefore, high absorption rates on the blade surface with las...

Abstract In order to reduce energy dissipation and alleviate the crisis, this paper proposes an absorption mode of distribution network with distributed power supply. First all, starting coefficient cutting off are set reflect efficiency inverter obtain active output photovoltaic system. Then, Gaussian iterative algorithm is used calculate flow network, which forms a model along branch switch c...

Near infrared spectroscopy (NIRS) is a noninvasive optical technology that relies on the relative transparency of biological tissues to near infrared light (700-900 nm) to determine tissue oxygenation. Oxy and deoxy hemoglobin and cytochrome aa3 possess distinct absorption characteristics in the near infrared spectrum. By monitoring absorption at wavelengths where oxyand deoxyhemoglobin and cyt...