Development of micro-surgery laser equipment with semiconductor laser

Development of Semiconductor Laser for Optical Communication

The performance, functionality and productivity of the semiconductor laser have been dramatically improved since its invention in 1962. Today it came to be indispensable for our life as optical components connecting home and the Internet as well as long-distance large-capacity trunk networks. It may be said that the information revolution pulled by the explosive spread of the Internet is origin...

control of the optical properties of nanoparticles by laser fields

در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...

Laser Doppler flow measurements with a semiconductor laser.

In their report on laser Doppler flow measurements (J. Biomed. Eng. 1985, 7, 225) Boggett et al. compared, among other things, three different light sources for use in a laser Doppler device. The aim of that study was to distinguish between Doppler shifted and non-shifted backscattered light to obtain a flow dependent signal, which is not caused by intensity fluctuations due to number fluctuati...

The Semiconductor Laser

Chaos is a fundamental property that possesses nonlinearity and a sensitive dependence on initial conditions. Because of the nonlinearity in a chaotic system it becomes very difficult to make accurate predictions about the system over a given time interval. Weather forecasting is an example of how chaos theory effects the accuracy of predictions over a given time interval. Through analyzing a w...

Temperature-Insensitive Semiconductor Laser