UNIT - V. (Angular spread 10 micro radians)

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Presentation transcript:

UNIT - V

(Angular spread 10 micro radians)

Laser-Professionals.com Courtesy of Metrologic, Inc.

He N2N2 CO 2 Vacuum Pump NaCl Window Mirror LASERLASER

Injection Of electrons Injection Of holes Active region

i.e. to measure atmospheric pollutants, Ozone concentration, water vapor concentration.

Cladding(n 2 ) Core(n 1 ) Axis of the fiber Incident ray

(1)

(2)

(3) (4)

(5)

Cladding(n 2 ) Core(n 1 ) Axis of the fiber Incident light ray

Cladding(n 2 ) Core(n 1 ) Axis of the fiber Incident light rays

Cladding(n 2 ) Core(n 1 ) Axis of the fiber Incident light ray

Cladding(n 2 ) Core(n 1 ) Axis of the fiber Incident light rays

Drive circuit Photo detector Light source Amplifier Signal restorer