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The first step to getting output from a laser is to excite an active medium. What is this process called?
- a)Pumping
- b)Exciting
- c)Priming
- d)Raising
Correct answer is option 'A'. Can you explain this answer?
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The first step to getting output from a laser is to excite an active m...
A collection of atoms or molecules that can be excited to a higher energy state is called an active medium. Before lasing can occur, the active media is "pumped". The process of raising the atoms in the active media from a lower energy state to a higher state is like pumping water up from a well.
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The first step to getting output from a laser is to excite an active m...
Exciting the Active Medium
Exciting the active medium in a laser is the first step in generating output from the laser. This process is known as pumping.
What is Pumping?
Pumping is the process of supplying energy to the active medium in a laser in order to excite its atoms or molecules. This energy input raises the atoms or molecules to a higher energy state, preparing them for the lasing action.
Types of Pumping
There are various methods of pumping used in lasers, including optical pumping, electrical pumping, and chemical pumping. Each method involves supplying energy to the active medium in different ways.
Optical Pumping
In optical pumping, light is used to excite the atoms or molecules in the active medium. This can be achieved using flash lamps, arc lamps, or other light sources to provide the necessary energy.
Electrical Pumping
Electrical pumping involves passing an electric current through the active medium to excite the atoms or molecules. This method is commonly used in semiconductor lasers.
Chemical Pumping
Chemical pumping involves using a chemical reaction to supply energy to the active medium. This method is often used in CO2 lasers.
Importance of Pumping
Pumping is essential for the operation of a laser because it prepares the active medium for the lasing action. Without pumping, the atoms or molecules in the active medium would not be in the proper energy state to produce laser light.
Exciting the active medium in a laser is the first step in generating output from the laser. This process is known as pumping.
What is Pumping?
Pumping is the process of supplying energy to the active medium in a laser in order to excite its atoms or molecules. This energy input raises the atoms or molecules to a higher energy state, preparing them for the lasing action.
Types of Pumping
There are various methods of pumping used in lasers, including optical pumping, electrical pumping, and chemical pumping. Each method involves supplying energy to the active medium in different ways.
Optical Pumping
In optical pumping, light is used to excite the atoms or molecules in the active medium. This can be achieved using flash lamps, arc lamps, or other light sources to provide the necessary energy.
Electrical Pumping
Electrical pumping involves passing an electric current through the active medium to excite the atoms or molecules. This method is commonly used in semiconductor lasers.
Chemical Pumping
Chemical pumping involves using a chemical reaction to supply energy to the active medium. This method is often used in CO2 lasers.
Importance of Pumping
Pumping is essential for the operation of a laser because it prepares the active medium for the lasing action. Without pumping, the atoms or molecules in the active medium would not be in the proper energy state to produce laser light.
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