Consider the following statements about copper vapour lasers : Though originally invented in 1996, they are now being developed furthre for a wide veriety of applications because 1. they can produce short and long wave length radiations 2. they can be foc

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(IES/B)
Consider the following statements about copper vapour lasers : Though originally invented in 1996, they are now being developed furthre for a wide veriety of applications because
1. they can produce short and long wave length radiations
2. they can be focused on very small areas.
3. of their very high pulse repetition frequency and narrow pulse-widths.
Of these statements :

question_subject: 

General Knowledge

question_exam: 

IES

stats: 

0,1,13,6,3,4,1

keywords: 

{'copper vapour lasers': [1, 0, 0, 0], 'long wave length radiations': [1, 0, 0, 0], 'high pulse repetition frequency': [1, 0, 0, 0], 'narrow pulse': [1, 0, 0, 0]}

The correct answer is option 4, which states that statements 2 and 3 are correct.

Statement 1, which states that copper vapor lasers can produce short and long wavelength radiations, is incorrect. Copper vapor lasers are known for their ability to produce a specific wavelength of light, typically in the green spectrum (around 510.6 nm). They are not capable of producing a wide variety of wavelengths.

Statement 2 is correct. Copper vapor lasers can be focused on very small areas. This is due to their narrow beam divergence and ability to produce a high-intensity, concentrated beam of light. This makes them suitable for applications that require precise and localized laser beams.

Statement 3 is also correct. Copper vapor lasers have a very high pulse repetition frequency and narrow pulse widths. This means that they can emit laser pulses at a rapid rate and with a very short duration. This makes them useful in applications that require high-speed laser processing or precise time synchronization.

In conclusion, option 4 is the correct answer as it accurately identifies the correct statements about copper vapor lasers.