Compensation of Thermally Induced Birefgingence and Phase Distortions in [100]-cut Nd:yag Crystals

Fabrication of Gelatin Scaffolds Using Thermally Induced Phase Separation Technique

Gelatin is considered as a partially degraded product of collagen and it is a biodegradable polymer which can be used to produce scaffolds for tissue engineering. Three-dimensional, porous gelatin scaffolds were fabricated by thermally induced phase separation and freeze-drying method. Their porous structure and pore size were characterized by scanning electron microscopy. Scaffolds with differ...

Thermal lens compensation of Nd:YAG rod laser using a solid element of negative temperature coefficient of refractive index

In high power solid-state-laser systems, one of the major problems is the thermal effect, which occurs in optically pumped laser materials. Heating of the laser medium causes thermal distortions, leading to degradation of beam quality. The main thermal effects in laser rods are thermally induced birefringence and thermal lensing effects. High efficiency, high power and good output beam quality ...

A Wide-band Fiber Optic Frequency Dxstribution System Employing Thermally Controlled Phase Compensation*

An active wide-band fiber optic frequency distribution system employing a thermally controlled phase compensator to stabilize phase variations induced by environmenkal temperaiure changes is described. The dishibution system utilizes bidirational ddwavekng th transmission to provide optical feedback of induced phase variations of 100 MHz signals propagating along the distribution cable. The pha...

Central composite experimental design applied to fabrication of LLDPE microporous membrane via thermally induced phase separation (TIPS) method

Compensation for phase distortions in nonlinear media by phase conjugation.

The ability of nonlinear optical phase-conjugate mirrors (PCM's) to correct for linear refractive-index inhomogeneities has been demonstrated both theoretically1'2 and experimentally.2 Propagation media often possess intensity-dependent indices of refraction that cause severe propagation distortion, such as thermal blooming and self-focusing. These distortions are often manifested in high-inten...