Principle
construction
working
Advantages
Disadvantages
100

C.K.N patel.

Who discovered carbondioxide laser ?

100

Quartz glass

What glass they use to construct carbondioxide laser.

100

5 levels

How many energy levels contain in carbondiocide laser?

100

welding, cutting

Applications

100

Harmful for eyes.

disadvantages

200

Reddy.

Who constructed Reddy shock tube?

200

1 Meter.

What is the length of the Reddy shock tube?

200

Two sensors.

How many sensors contain in Reddy shock tube ?

200

Treatment of Kidney stones.

One Use ?

200

More Coast.

Disadvantages ?

300

Gallium Arsenide.

Which semiconductor material they use semiconductor laser ?

300

4 mm.

What is the length of the semiconductor laser ?

300

Adding impurities.

What is doping ?

300

LED

uses ?

300

visible region.

Disadvantages ?