Laser Technology UNIT-III TYPES OF LASER Flashcard

Front

During a physics experiment, ARAVINTHAN.V and SAIKUMAR were discussing the lifetime of an electron in a metastable state. What did they conclude?

Back

10^-3 sec

Front

During a science experiment, SUBASH observed that a metastable state can have a lifetime ______.

Back

Higher than the lower laser level

Front

During a physics experiment, SATHEESHKUMAR observed that an excited state (except metastable state) has a lifetime of about.

Back

10−8 s

Front

During a science experiment, PRAVEEN observed that the laser beam emitted from the device was in the form of .........

Back

pulses or continuous waves

Front

Which ion is responsible for lasing action in a science competition discussion between SAI and KISHORE? Options: Al3+, Cr3+, Al2O3, Cr2O3

Back

Cr3+

Front

Which LASER is used in holography?

Back

Ruby

Front

What is the pumping technique used in a He-Ne gas laser?

Back

Electrical discharge

Front

Which type of laser is most widely used in industrial materials processing applications?

Back

Carbon Dioxide Laser

Front

Which type of laser has high efficiency?

Back

CO2

Front

Identify an example of a gas laser.

Back

CO2 Laser