Construction of He Ne laser, main components He-Ne laser, characteristics of Helium Neon laser
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- Опубліковано 7 лют 2025
- हैल्लो फ्यूचर लीडर्स This video is related to construction of He Ne laser, main components helium neon laser, characteristics of he ne laser, applications of he ne laser, first gas laser, 4 level Helium neon laser and the lecture is by technical Physics.
This is the first lecture part 1 of He- Ne Laser. To watch second lecture link below
और हाँ चैनल सब्सक्राइब करना मत भूलना आपके लाइक्स और कमैंट्स का हमें इंतजार रहेगा
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TechnicalPhysics
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Yes sir bhot hi cool samja dete hai
Characteristics of He-Ne laser are:-
~He-Ne(Helium-Neon) laser is a gaseous laser.
~The laser action of this laser is of 4-level pumping scheme.
Brewster's law:- It is a law gave in the terms of polarization of light which is mainly used to remove the unwanted wavelengths either from the lens of spectacles or is used to eliminate the wavelengths in the optical renoator/cavity of a laser whose wavelengths are not near 6328 Angstroms.
Thank you sir the video cleared my concept!
Great explanation ever🎉😊
Characteristics of He Ne Laser are
1) It is a 4 level Laser
2) High Efficiency
Brewster Window not allows unwanted Wave lengths and it acts as a polarizer.
10:1 not 10:4
Great explanation
CHARACTERSTICS OF LASER-
IT IS A FOUR STAGE LASER.
IT IS A COMBINATION OF HE-NE GAS.
IN WHICH IT IS COMBINED IN RATIO 10:1.
NE ATOMS IS RESPONSIBLE FOR LASER.
IT IS HIGH EFFECTIVE LASER CONTINUES LASER OBTAIN.
BREWSTERS WINDOW- it is a substrate act as a polariser used to eliminate unwanted wavelength.
THANKYOU SIR FOR YOUR EFFORTS.
Such a great video thanks sr
Bahut achha hi smjh aaya h sir tq sir
characteristics of the neon laser
1. it is a 4-level laser
2. it does not require any external.
3. active medium used is HE with NEON in the ratio of 10:4
4. it is highly efficient if compared with Ruby Laser
brewsters window: it is an device which is used in He-Ne laser and it is used to prevent unwanted wavelength furtehr getting an desired output of 6328angstrom.
10:1
10:1
thank you sir for amazing lecture provide karne k liye
Two characteristics:High efficiency,No external cooling is required.
Brewster's law works on eliminating the unwanted wavelength .e.g. in he-ne laser,it gives its stables output i.e. 6328A. Other one get eliminate.
Sir ,the way uh teach ,almost the concerning topic leave its shape in mind🙂. Thankew so much sir for making it little easier🥰.
Love 😘
Sorry sir, but I will be writing all the charactertistics as you were an excellent teacher :)
1. Gas based laser
2. First continuous laser, as Nd-YAG and Ruby lasers had pulsed outputs
3.Active Medium= 10:1 mixture of He and Ne respectively
4. Electrically Pumped
5. 4-level laser
6. Output wavelength falls in the re spectrum i.e usually 6328 Angstrum
7. No external cooling required
8. Long life laser
All these qualities makes it widely used in scientific experiments and laboratories.
Brewster's Window is basically a polarizer that eliminates the unwanted wavelegths+unwanted reflections.
Badiya
Thank you for sharing this topic
Thank you sir great to lecture ❤❤❤❤
Sir you are great ♥️✌️
Brewster's law is the maximum polarisation which can be achieved by transmission of light ray on a transparent medium
One of the best teaching sir ji ❤️❤️
Use are amazing sir ji......love u...
Lot of Love
From
MGMCOE nanded
Sir blessed is the least word that can be said when it's came on your video..
Greetings from Haryana....
Thanks and keep sharing
High efficiency
No external pumping in laser
Brester's law - it is act as polariser used and eliminated unwanted wave length. 😍😍
Such a great video 👍👍👍👍
Sir thanks 👍
Sir I am from ap your lecturers really awesome sir
Please continue 🙏 🙂
Whh prabhu❤ 22:10
very good teacher
Happy to help, keep learning
Great man!!!
Best teacher
Nice explanation sir thnx sir 😌
1) it is 4 level laser
2) electric pumping is used
Brewster window are which eliminate the unwanted wavelength
1. characteristics - 4 level,6328 output,brewster window is used to get desired output wavelength
Mast 👌 sir
characteristics are
1. it is a gas laser
2. countionous output
brewster window is used to not allow unwanted wavelenght to escape.
Brewster’s law is a relationship of light waves at the maximum polarization angle of light.
4 level laser , electric pumping , active medium he with ne ,
A Gus laser ,
High efficiency,
Continuous laser output 6328Å
Characteristics :
1)It is a gas laser
2)It is a 4 level Laser
3) Electric Pumping Is used in it
4)No Cooling System Is there in it
5)It gives output of wavelength 6328 Å
6) Active Material : Helium and Neon in the ratio of 10:1
7)It gives Continuous Output
Brewster Window : Does Not Allow Unwanted Ray of light to refract/transmit
❤❤
Mai aapke laser ke sare videos dekhe sir kafi mast sir ..college chutti h aur syllabus ka kafi tension tha ...pr mai laser pura khatm kar Lia thanks sir
basic use of brewster glass .
1.unwanted wavelength has donot out through the cavity only 6283angstrom range of photon is coming out through asa out put light .
Thanks a lot sir
Brewster's window:-It is a substrate act as polariser which is used to remove unwanted wavelengths
*Characteristics of he ne laser*
1.tube length upto 80cm
And diameter 1.5cm (hint:H shaped laser)
2. Optical cavity/resonator: it has two mirrors (m1,m2)
M1: 100%reflecting
M2: partially reflecting
(To make 100%reflecting mirror silver coating is done on the mirror m1
*Partially reflecting*
Less silver coating is done on mirror m2)
3. (Brewster's law: this law is used to eliminate unwanted wavelengths from a polarizer)
*Brewster window*:
It doesn't emit wavelength which are not equals to 6328 A⁰ . It acts as a polarizer
its good practice
@@TechnicalPhysics sir, please make a video on ND.YAG laser and semiconductor laser🙏🙏
Characteristics of laser :
1). 4level of energy
2). High efficiency compared to Ruby Laser
Brewster Law:
∅=tan-¹(n2/n1)
∅ : Brewster angle
n1 : incident medium
n2: refracted medium
Brewster's law = Malus discovered that when an unpolarised falls on the surface of any transparant substance, the reflected and refracted rays are partially plane polarized and the degree of polarisation depends on the angle of incidence.
Brewster discovered a relation between polarising angle and refractive index of the transparant substance w.r.t surrounding medium i.e.,
,u= tan ip
Brewsters window is used to eliminate different unwanted wavelength
charactersitcs:
1. high efficiency
2. contionous beam output
3. 4 level laser
Brewster window are those window in which it will not enter the unwanted rays in the object. it return back of unwanted rays.
Character stics of He Ne laser 1 gas laser
2.4level laser
3 high efficiency
4.no external cooling required
5 electric pumping source
6activ material is He Ne with ratio 10:1
characterstics
1. High efficiency (continious laser)
2. 4 level laser
3. DC source is used as electric pumping source
characterstics of he-ne llaser are
1. continous laser output
2.electric pumping is used
brewster window never allows unwanted wavelengths as it is set in a specific angle and it acts as a polarizer
It is 4 level laser
It doesn't not require cooling source
6328A
Good efficiency
Brewsters law is the maxm polarisation which can ve achieved by transmission of light ray on a transparent medium....
1. 4 level laser
2. High efficiency laser
Really helpful video thanks 😊
Brewster angles :- Brewster's angle is the angle of incidence at which light with a specific polarization is transmitted through a transparent dielectric surface without reflection. It is also known as the polarization angle. characteristics :-Cost: He Ne lasers are low-cost.
Life-time: He Ne lasers have a short life-time.
Warm-up time: He Ne lasers have a long warm-up time.😊😊😊😊😊😊
Thankyou so much for making this helpful video...
Nice explanation sir 👍👍
tnqqq sir
1) It is 4 level laser.
2) High efficiency.
3) No external Colling is required.
- Brewsters window are used to eliminate unwanted wavelength.
Sir aap bahoot acche se explain kerte hai aap her chiz btate hai👍
❤️❤️❤️❤️
Tq sir
helium neon laser is a gas laser
1 . it has 4 energy level.
2.high efficiency .
3.active material helium
4.no external cooling material addition.
5.continuous out put.
He-Ne laser.
It is a gas laser.
It is a four level laser.
high efficiency and continious.
Electric pumping is used.
Brewster window act as a polariser to remove unwanted wavelength
good practice when write here
Brewster window: it is a substrate act as polarizer which eliminates the unwanted wavelengths. 22:08
4 level
High efficiency
Brewster window act as polariser used to eliminate unwanted wavelength
Characteristics
Gas laser and high efficiency
Brewster windows
It works as a polarizer and eliminate the unwanted wavelengths inside the laser
Brewster law
It is a law which finds the angle for which when the unpolarized light falls on the surfaces then it will give a perfectly polarized light.
❤
He catalyst ke thara kaam karta h
Or ye highly efficient hota h Ruby laser se or contious hota h
Brewster angle is a polarisation angle.It is a angle at which unpolarized light polarizes and reflects when incident on a transparent medium.
Here Brewster windows are used in order to get the output wavelength of desired wavelength of 6328 angstrom.
The most important property of He Ne laser is that it is low power consuming device and output can be withdrawn from it for long period of time.
GOOD
Thank you Sir!
Characteristics:
1)Active Medium is He-Ne mixture in ratio (10:1)
2)Pumping source(Electrical source)
3)Electric discharge in gas tube excites electrons from ground state to the excited state.
4)High efficiency
5)Continuous output(unlike Ruby Laser)
charcteristecs of He Ne laser are
1)it is a gas laser
2)high efficeincy
3)no external cooling required
4)4th label laser,
Brewester window not allows unwated wave lenghths , is a subtrate act as a polariser
name _ riyan kainat (CSE)
It is a 4 level laser.
It is a gas laser.
Two characteristics of He- Ne laser are :-
a.) It is 4 level laser
b.) It uses electrical pumping
Characteristics it a gas laser with four levels and give output in continuous form with wavelength of 6328 angstrom with high efficiency using electric pumping ,no external cooling required and brewsters window used to eleminate unwanted wavelength it's act as a polarizer
in he -ne laser
electrical pumping is used
and 4 level laser is used
Nice
It's a 4 enrgy level laser.
It gives a continuous laser output.
In this laser Brewster window behaves like polariser which is designed at the concept of Brewster law by which a specific type of light is emitted
Charactics of he - Ne LASER
1) 4 Level laser
2) Active material use He -Ne(10:1)
Sir apka lecture super 👍👍👍 ....I am form West Bengal ❤️❤️...
Thanks for watching
Sir next topic polarization sir plzz 🙏🙏🙏
High efficiency and electrical pumping is used
Bruster law is nothing but it is related to polarisation law
Brewster's angle is an angle of incidence at which light with a particular polarization is perfectly transmitted through a transparent dielectric surface, with no reflection
Gas laser
4 level laser
Helium neon active material (10:1)
Electric pumping
No external cooling
Continuous laser
High efficiency
B w-is used to eliminate extra wavelengths.
*Two Characteristics of He-Ne Laser* :
• It is a gas laser with four level laser
• Active medium is helium & neon (10:1)
*Brewsters window* :
It is a substrate act as polariser and used to get desired wavelength or eliminate unwanted wavelength
*Brewster law* :
u = tan( I*P)
Characteristics
High efficiency, Gas Laser, 4 level laser,
Brewsters window use to to eliminate unwanted wavelength
Sir Semiconductor laser pr ek video bnaiye please
Engineers respect button ✅👇🏻
Brewster window is used to eliminate unwanted wavelength
good
Characterstics of He-Ne laser
1.iACTIVE MATERIAL ARE He and Ne
2. No extra cooling used
BROWSTER WINDOW ACT AS A POLARZIER
10:22 : Construction of He-Ne Laser
Sir hum kisi b laser m maximum kitne energy levels daal sakte hain ?
A1 4 Level Laser And Gas Laser
A2 Brewsters Window Act As A Polariser To Remove Unwanted Wavelengths.
Brewsters window allows only the required wavelength of light to pass through it and remaining is reflected back into the medium(or) abosrbed
rayleigh jeans law and plank law pr video bnaiye sir🙏🙏🙏
characteristics-- it is a gas laser
4 level laser
more efficiency
Brewster window is use to eliminate unwanted wavelength which are present over there
Brewster window used to eliminate unwanted wavelength
Thankiyou sir
Characteristics of he ne laser are
High efficiency
Electric pumping is used
High efficiency
Electric pumping is used
Its produce 6328 armstrong wavelen, he and ne is used as active material,
Sir please make video on wave optics according to aktu syllabus