نتایج جستجو برای: laser induced birefringence
تعداد نتایج: 1145948 فیلتر نتایج به سال:
We demonstrated a method to trim the beat frequency of dual-polarization fiber grating lasers by side-exposing the laser cavity to UV beam. The UV-side-illumination induces an additional birefringence of the cavity fiber and therefore permanently changes the beat frequency of the laser. The beat frequency can be trimmed up or trimmed down, depending on the UV incident direction relative to the ...
2014 Dichroism and birefringence are studied for the case of a strong saturating laser and a linearly polarized weak probe laser interacting with a dilute gas. For linearly or circularly polarized saturating laser fields the optical analog of the Kerr or Faraday effect are obtained respectively. Two photon, Doppler-free polarization effects are studied for two and three level systems (J = 0 ~ J...
assessment of atypical birefringence images using scanning laser polarime-try with variable corneal compensation. New algorithms for multi-class cancer diagnosis using tumor gene expression signatures. The protein data bank: a computer-based archival file for macromolecular structures. Substructure-based support vector machine classifiers for prediction of adverse effects in diverse classes of ...
36 LLE Review, Volume 69 Ultrafast electro-optic (EO) sampling was first demonstrated in 19821 and has since become a valuable tool for testing optoelectronic and electronic devices and materials.2 Conventional EO sampling of weak electric fields employs a tightly focused, pulsed-laser probe beam to measure electric-fieldinduced birefringence in an EO crystal; hence, it is referred to as “point...
Experiments on a high-power end-pumped Nd:YAG rod laser with an efficient birefringence compensation will be presented. A linearly polarized output power of 114 W with an M2-value of 1.05 was realized. Furthermore, the from our best knowledge highest injection-locked singlefrequency output power of 87 W in a nearly diffraction-limited beam was demonstrated.
The birefringence of a red blood cell (RBC) is quantitatively monitored as it becomes infected by a malarial parasite. Large changes occur in the cell's refractive index at different stages of malarial infection. The observed rotation of an optically trapped, malaria-infected RBC is not a simple function of shape distortion: the malarial parasite is found to itself exercise a profound influence...
We experimentally investigate generation of nitrogen molecular ion (N2+) lasers with two femtosecond laser pulses at different wavelengths. The first pulse serves as the pump which ionizes the nitrogen molecules and excites the molecular ions to excited electronic states. The second pulse serves as the probe which leads to stimulated emission from the excited molecular ions. We observe that cha...
The induced flow effect is the rotary motion generated in the fluid flow due to the temperature gradient. The phenomenon of thermophoresis is the movement of particles from the warmer side of the fluid to the cooler side. Laser is a very suitable device for creating a temperature gradient due to its unique features such as high power density, harmonic waves, single wavelength and very low diver...
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