18 Questions
What does LASER stand for?
Light Amplification by Stimulated Emission of Radiation
What does LASER stand for?
Light Amplification by Stimulated Emission of Radiation
What are the three main features of LASER light?
Monochromatic, coherent, and collimated
What are the three main features of LASER light?
Monochromatic, coherent, and collimated
What does monochromatic mean in the context of LASER light?
Only light of a single wavelength is produced
What does monochromatic mean in the context of LASER light?
Only light of a single wavelength is produced
What does coherent mean in the context of LASER light?
All photons have the same phase, producing a high-intensity beam
What does coherent mean in the context of LASER light?
All photons have the same phase, producing a high-intensity beam
What does collimated mean in the context of LASER light?
LASER light has a narrow, powerful ray
What does collimated mean in the context of LASER light?
LASER light has a narrow, powerful ray
What is population inversion in the context of LASER light?
When the number of electrons at the excited state becomes larger than those at the ground state
What is population inversion in the context of LASER light?
When the number of electrons at the excited state becomes larger than those at the ground state
What is the role of electron states in creating LASER light?
Electrons absorb energy and move to an excited state, then they fall to an intermediate metastable state
What is the role of electron states in creating LASER light?
Electrons absorb energy and move to an excited state, then they fall to an intermediate metastable state
Why are fluorescence measurements more challenging than absorbance measurements?
The detection of emitted photons at lower energy is not always easy
Why are fluorescence measurements more challenging than absorbance measurements?
The detection of emitted photons at lower energy is not always easy
Why have researchers adopted the use of LASER sources for better excitation-emission in cell biology and medical imaging research?
It ensures that the number of electrons returning from the metastable state to the ground state is higher than those that are transiting from the ground state to the metastable state, allowing for easier detection
Why have researchers adopted the use of LASER sources for better excitation-emission in cell biology and medical imaging research?
It ensures that the number of electrons returning from the metastable state to the ground state is higher than those that are transiting from the ground state to the metastable state, allowing for easier detection
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