0
Metastable state in laser is the intermediate state between the e2 and e1 where the excited electron can stay for a comparably long time.
Wiki User
∙ 9y ago
Add your answer:
Earn +20 pts
What is the difference between solid state laser and semiconductor laser?
LASER is Light amplification by stimulated emission of radiation. As far as I have understood, Solid State laser is a macroscopic form of diode laser. Thus a small semiconductor diode is similar to a solid state laser except for the mechanism of lasing and size.
What is the main purpose of a heat pad?
A heat pad is a chemical apparatus that transforms stored state energy into heat when stimulated. This is often achieved through the use of certain salt solutions stored in a metastable state.
What is the definition of a Coherent Laser?
A Coherent Laser is a laser produced by the Coherent company in Santa Clara, California. In order to find a list of the available products by Coherent as well as the ability to contact them you can visit the official Coherent website.
Why 4 level laser system is better than 3 level laser system?
Three and Four Level Laser SchemesWe have said that the two level scheme is not generally feasible for laser action. There are two main reasons for this. The first reason is that the energy being used to pump the particles into the upper laser state has an equal probability of stimulating them back down. Thus it is not possible to get nore than half of the particles into the excited state. The three level scheme gets around this problem by first exciting the particles to an excited state higher in energy than the upper laser state.(See figure below) The particles then quickly decay down into the upper laser state. It is important for the pumped state to have a short lifetime for spontaneous emission compared to the upper laser state. The upper laser state should have as long a lifetime (for spontaneous emission) as possible, so that the particles live long enough to be stimulated and thus contribute to the gain.The four level laser scheme goes one step further and also depopulates the lower laser level by a fast decay process.(see figure below) This greatly decreases the loss of laser photons (v2) by stimulated absorption processes since the particles in the lower laser level have a short life-time for spontaneous emission.
Why is a laser capable of burning things?
A laser is capable of burning things because of the way they work. A laser by definition generates an intense beam of monochromatic light. This monochromatic light is actually electromagnetic radiation which because of its intensity causes things to burn.
What is the role of metastable state in laser?
The role of metastable states in circumventing laser pulse jitters in multi-step laser excitation of high-lying Rydberg and autoionizing states is discussed. A case study is presented where step-wise excitation of 3d4d (3)G(3,4,5) states of Ca is achieved despite a large jitter between the laser pulses
What radioactive decay processes have no transmutation?
Only gamma, it is the process by which a metastable excited nuclear isomer of an isotope relaxes down to the ground state of the same isotope. Some metastable states must undergo multiple gamma decays through less excited metastable states to reach the ground state.
Why metastable state is more stable then excited state?
because according to energy profile,metastable state is lying lower than excited state.as we know that states of lower energies are more stable than states of higher energy.so it is more stable than excited state.
What is metastable state of plasma?
Excited state of an atom, nucleus, or other system that has a longer lifetime than the ordinary excited states and generally has a shorter lifetime than the ground state. It can be considered a temporary energy trap or a somewhat stable intermediate stage of a system of which the energy may be lost in discrete amounts. The many photochemical reactions of mercury are a result of the metastable state of mercury atoms, and radiation from metastable oxygen atoms accounts for the characteristic green colour of the aurora borealis and aurora australis.
What kind of flip flop has no invalid or unused state?
None, all flip flops have a small probability of entering a metastable invalid state.
Can water stay liquid at subzero temperatures if you had enough pressure?
The sub zero liquid state is an achievable metastable state with an energy level between that of the gas and solid. Subzero water in this metastable state is said to be super-cooled. In the temperature range 0c to -40c the supercooling phenomenon is prevalent. Reference: See the related link below.
Why ruby laser is a solid state laser?
laser production is done by a solid state active working material.
How electrons can stay in the metastable state for longer time?
To leave a state and decay to a lower energy state, the electron must lose energy. In metastable states, there are no lower energy state to go to that have strongly allowed transitions (that is simple emission of a photon, diplole transititions) and so the electron must decay by slower, less probable means (like two photon decay, magnetic dipole decay). Hence, it stays in that state for longer.
Why are some isotopes when written out end in m. I am doing some research for a writing project on isotopes and I am confused because I have found there's Barium-127 but there's also Barium-127m?
I think it stands for metastable - Metastable state is an excited state of an atom or other system with a longer lifetime than the other excited states.
What is the difference between solid state laser and semiconductor laser?
LASER is Light amplification by stimulated emission of radiation. As far as I have understood, Solid State laser is a macroscopic form of diode laser. Thus a small semiconductor diode is similar to a solid state laser except for the mechanism of lasing and size.
What is metastable ion in mass spectroscopy?
An ion that is formed with sufficient excitation to dissociate spontaneously during its journey from source to detector is called metastable ion.
Name the atoms or elements which exist in metastable state?
Carbon is one of the elements which exist in meta stable state. Diamond is the meta stable state of carbon, which upon given certain activation energy, changes into graphene.
