answersLogoWhite

0

Becoz population inversion is not achievable in case of two level laser system...

User Avatar

Wiki User

14y ago

What else can I help you with?

Related Questions

What is the best laser level for ceiling installation?

The best laser level for ceiling installation is the DEWALT DW088K Cross Line Laser.


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.


How do you get past level 2 in Spyro 2?

If you mean quicksilver vault just find the laser puzzles complete them and then go to the visible quicksilver to finish level


Why two level pumping scheme is not suitable for laser action?

Actually two level scheme has serious difficulty. In two level upward (level 1 to 2)transition and downward transitions(2 to 1) occurs. In steady state, the population inversion not obtain. (population inversion Means the numbers of atom at level 2 is greater than level 1)


What is the best method for accurately leveling the ground using a laser level?

The best method for accurately leveling the ground using a laser level is to set up the laser level on a stable tripod at a known elevation point, then adjust the height and position of the laser level until the laser beam is hitting the desired points on the ground. Use a receiver to detect the laser beam and adjust the ground level accordingly until it matches the desired elevation.


What is the highest possible level on mass effect 2?

Level 30


How do I effectively use a Bosch laser level for accurate measurements and leveling tasks?

To effectively use a Bosch laser level for accurate measurements and leveling tasks, follow these steps: Set up the laser level on a stable surface. Turn on the laser level and adjust the height and angle as needed. Use the laser beam to mark reference points on the surface you are working on. Ensure the laser level is calibrated correctly for accurate measurements. Double-check your measurements using a tape measure or ruler for precision. Use the laser level to ensure objects are level or plumb by aligning them with the laser beam. Always follow the manufacturer's instructions for best results.


How challenging is the laser wall level in the game?

The laser wall level in the game is very difficult and requires precise timing and strategy to complete.


Where is it possible to learn about laser systems?

You can learn about laser systems at Universal Laser Systems, Palomar, Laser Learning, Laser Star, E Science News, Lensar, CMS Laser, How Stuff Works and Telesis.


How is Dewalt laser level being used?

Dewalt laser level is used in a DIY project, home, and building construction site for leveling or making a line for tiling, picture wall hanging, Deck Etc.


Is it possible for some laser printers to not need an imaging drum to work?

No all laser printers require an imaging drum to in order for the laser to write the image on.


How to use a laser level effectively for accurate measurements and alignments?

To use a laser level effectively for accurate measurements and alignments, first ensure the device is set up on a stable surface. Turn on the laser and adjust the height and angle as needed. Use the laser beam to mark reference points on walls or surfaces. Make sure the laser is level before taking measurements. Double-check measurements for accuracy and adjust as necessary.