Working of Helium Neon He Ne Laser, Applications of Helium Neon Laser Advantages over ruby laser

Описание: हैल्लो फ्यूचर लीडर्स In this video Working of He Ne laser, Construction of He-Ne helium neon laser, characteristics of he ne laser, applications of he-ne laser, first gas laser, 4 level Helium neon laser lecture by technical Physics lecture part2 is discussed in detail. A helium–neon laser or He-Ne laser, is a type of gas laser whose gain medium consists of a mixture of 10:1 ratio of helium and neon. Helium-neon lasers, particularly the standard devices operating at 632.8 nm, are often used for alignment purposes and are competing with laser diodes.

► About this video:
Helium-Neon laser. In the He-Ne laser the light is produced by atomic transitions .
Helium-Neon laser definition can be describes as Helium-Neon laser is a type of gas laser in which a mixture of helium and neon gas is used as a gain medium. Helium-Neon laser is also known as He-Ne laser. This video is very useful for graduation physics courses like engineering physics AKTU students, BSc Physics in hindi students, and all other who need to know about this topic.

Dear students study and prepare given below questions which can be asked in your exam.
What gas mixture is used in the He-Ne laser?
State two properties that make the He-Ne laser highly coherent.
Describe the function of the optical resonator in the He-Ne laser.
How does population inversion occur in the He-Ne laser?
What is the typical wavelength of the He-Ne laser, and in which region of the electromagnetic spectrum does it operate?
What is the purpose of the cooling system in the He-Ne laser?
List two applications of the He-Ne laser in scientific research.
Why is the He-Ne laser well-suited for holography?
Explain the process of stimulated emission in the He-Ne laser.
How does the output coupler contribute to the laser beam generation in the He-Ne laser?
What is the significance of the long coherent length of the He-Ne laser?

Discuss the construction and working principle of the He-Ne laser in detail.
Compare and contrast the properties of gas lasers, such as the He-Ne laser, with solid-state and semiconductor lasers.
Explain the importance of coherence in laser applications, citing examples of how the He-Ne laser benefits from this property.
Describe the applications of the He-Ne laser in fields like metrology, interferometry, and holography.
Discuss the role of the optical resonator in achieving optical feedback and laser amplification in the He-Ne laser.
Compare the stability and reliability of the He-Ne laser with other gas lasers.
Explain the concept of population inversion and its significance in laser operation, particularly in the He-Ne laser.
Elaborate on the importance of the output coupler in controlling the laser beam output of the He-Ne laser.
Discuss the factors that contribute to the efficiency of the He-Ne laser, and how it compares to other lasers.
Describe the advantages and limitations of the He-Ne laser in various applications.

Which of the following properties describe the He-Ne laser? (Select all that apply.)
a) Coherence
b) High divergence
c) Monochromaticity
d) Short coherent length
e) Population inversion

What are the components of the He-Ne laser? (Select all that apply.)
a) Laser diode
b) Laser tube
c) Optical resonator
d) Cooling system
e) Power supply

Match the gas laser property with its description:
30. Stability (i) Wide range of wavelengths

Coherence (ii) Resistance to fluctuations or variations
Efficiency (iii) In-phase light waves
Wavelength Range (iv) Conversion of electrical energy to light

The He-Ne laser emits light at approximately _______ nm.
The _______ creates an optical resonator in the He-Ne laser.
Population inversion is achieved by _______ of helium and neon atoms.
The He-Ne laser's _______ allows for long-distance interference experiments.
Gas lasers have a wide _______ of wavelengths, making them versatile in various applications.

Calculate the approximate wavelength of the He-Ne laser in nanometers (nm).
If the coherence length of the He-Ne laser is 5 meters, how many interference fringes would be observed in a Young's double-slit experiment with a separation of 1 mm?

You are a researcher working with the He-Ne laser. Explain its importance in precision scientific measurements to a colleague from a different field.
Imagine you are an engineer designing a laser-based alignment system. Describe why the He-Ne laser is preferred for this application.

Do you think the He-Ne laser will continue to be relevant in modern laser technology? Why or why not?
How could the He-Ne laser be used to create a holographic image?

Compare the efficiency of gas lasers, such as the He-Ne laser, with solid-state lasers in terms of power consumption and output power.

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