Monthly Archives: April 2011

Scalar and vector analysis

Let us discuss today about two quantities called scalars and vectors. Suppose you are going in your car or bike. Your vehicle must have speedometer which shows the speed. Let the speed is 60 km/hour. Now suppose you have certain … Continue reading

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Applications of electromagnetic field theory

Electromagnetic Field Theory has applications in analysing and designing of communication system like: Satellite Communication TV Communication Wireless Communication Mobile Communication Microwave Communication This theory is also used in analysis and designing of antenna, transmission lines and wave guides.

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Difference between circuit theory and electromagnetic field theory

Circuit Theory: As the name suggests, circuit theory deals with electrical circuit. An engineer can predict the performance of complicated electrical networks with the help of circuit theory. But this theory has certain limitations like : It cannot be applied … Continue reading

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Construction of semiconductor laser

In the last article, I have explained the basics of semiconductor. Today I will explain the construction of a semiconductor laser. Example of semiconductor laser: One of the examples of semiconductor lasers is gallium arsenide (GaAs). It is heavily doped … Continue reading

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Beant college of engineering and technology gurdaspur

Name of the Institute: Beant College of Engineering & Technology is situated in the city Gurdaspur (Punjab) of India. Affiliated with: Punjab Technical University (PTU), Kapurthala Approved by: All India Council for Technical Education (AICTE), New Delhi. Courses offered:

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Baba Kuma Singh Ji Engineering college Amritsar

Name of Institute: Baba Kuma Singh Ji Engineering college is situated in the city Amritsar (Punjab) of India. Affiliated with: Punjab Technical University (PTU), Kapurthala Approved by: All India Council for Technical Education (AICTE), New Delhi. B.Tech. Courses offered:

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Semiconductor laser

Before discussing the construction and working of semiconductor laser, let us discuss the review of semiconductors as it will be necessary for you to write the basics of semiconductors in case of exams: A semiconductor is a material whose conductivity … Continue reading

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wavelength, output and applications of carbon dioxide laser

Why helium is doped in carbon dioxide laser: The CO2 molecules in the states E4 and E3 deexcite to state E2 through inelastic collision with unexcited CO2 molecules. This process is very fast so there will be accumulation of CO2 … Continue reading

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Working of cabon dioxide laser

In the earlier articles, I have explained the modes and construction of carbon dioxide laser. Today I will explain the working of the carbon dioxide laser. Pumping of nitrogen molecules: As electric discharge is used as pumping source and when … Continue reading

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Construction of carbon dioxide laser

In the previous article, I have explained the various modes of carbon dioxide and about the significance of these modes in carbon dioxide laser. Today I will discuss the construction of carbon dioxide laser. Carbon dioxide laser consists of a … Continue reading

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