Unit 3: Density of States for PHOTONS I Light Semiconductor Interaction I B. Tech | M.Sc. (Phy)

The video explains the density of states for photons. # light matter interaction. An expression has also been derived for the same. After watching u would be able to answer following questions. Assignment 1. Define DOS for PHOTONS. 2. Why has the factor of 1/8 been introduced? 3. The volume of the sphere has been assumed to give an idea about the number density of photons. Comment. 4. Is the expression for radius R independent of length L of the cubical box imagined. 5. Deduce the expression for DoS in terms of wavelength. Anil Bisht A.P. (Department of Physics ) 13, April 2020 #Densityofstates #Densityofstatesforphotons #Photondensity #Densityofstatesfunction Link of more RELATED videos : 1. HOT POINT PROBE METHOD 👇👇    • Hot Point Probe Measurement - Theory ...   ************************************ 2. Density of states and fermi level 👇👇    • Density of States and Fermi Level | F...   ************************************* 3. DIRECT and INDIRECT bandgap semiconductor 👇👇    • Direct and Indirect Band Gap Semicond...   ************************************* 4. Quantum theory of electron 👇👇    • Quantum free Electron theory of metal...   *************************************** 5. Important questions of b. Tech 1st year 👇👇    • Important Questions for B.Tech.1st ye...   *************************************** 6. Classical theory of free electron 👇👇    • Classical free electron theory | Assu...   ************************************** 7. Wiedemann franz law 👇👇   • Wiedemann Franz Law | B. Tech Physics...   *************************************** 8. FERMI ENERGY NUMERICAL    • Unit 1: Fermi Energy Numerical 1 | Sh...   *************************************** 9. Energy BANDS IN SOLIDS    • Unit 1: Energy Bands in Solids | Form...   *************************************** 10. OCCUPATION PROBABILITY    • Occupation Probability | Fermi Functi...   *************************************** 11. CLASSICAL THEORY OF FREE ELECTRON    • Classical free electron theory | Assu...   *************************************** 12. Density of states in 3d, 2d, 1d and 0d    • Density of States in 3D, 2D, 1D and 0...   *************************************** 13. Heterostructures and associated band diagrams    • Heterostructures & Band Diagrams | Se...   *************************************** 14. BANDGAP BY UV VISIBLE SPECTROSCOPY    • Band Gap by UV-Visible Spectroscopy |...   *************************************** 15. VAN DER PAU METHOD    • Van Der Pauw Method I Resistivity Mea...   *************************************** 16. HALL EFFECT HALL MOBILITY    • Hall Effect | Hall Voltage | Hall Coe...   *************************************** 17. Four point probe method    • Four Point Probe Method | Resistivity...   *************************************** 18. E-K DIAGRAM    • E-k Diagram | Allowed and Forbidden B...   *************************************** 19. KRONIG PENNY MODEL    • Unit 1:  Kronig Penny Model | Periodi...   *************************************** 20.density of states for PHOTONS    • Unit 3: Density of States for PHOTONS...   *************************************** 21. Photo voltaic cell    • Unit 3: Photo Voltaic Effect  I  Ligh...   *************************************** 22. Optical joint density of states    • Unit 3: Optical Joint Density of Stat...   *************************************** 23. Capacitance and Voltage Measurement    • Capacitance Voltage Measurement | CV ...   *************************************** 24. Drawbacks of Free Electron Theory    • Drawbacks of Free Electron theory | B...   *************************************** 25. Periodic Potential in Solids    • Periodic Potential in Solids I  Origi...   *************************************** 26. Probability of Emission and Absorption    • Probability of Emission and Absorptio...   *************************************** 27. Fermi Energy Numerical - 2    • Fermi Energy Numerical 2 | Show that ...   *************************************** 28. Fermi Energy Numerical -3    • Unit1: Fermi Function Numerical 3 | T...   *************************************** 29. Fermi Energy Numerical -4    • Unit2: Fermi Energy Numerical 4 | Fer...   *************************************** 30. Solar Cell    • Unit 3: Solar Cell | Photovoltaic Effect   *************************************** 31. DOS in 1-D, 0-D    • Density of States in 1D and 0D | Part...   *************************************** 32. Variation of Fermi level with Temperature    • Variation of Fermi level with tempera...   *************************************** 33. Question paper of B.Tech Physics (Semiconductor Physics )    • B.Tech 1st year Semiconductor Physics...   *************************************** 34. EFFECTIVE MASS    • Effective mass of an electron | Semic...   *************************************** 35. Solutions of b.tech 1st year physics May 2019 Semiconductor Physics    • B.Tech 1st year Semiconductor Physics...   *************************

• #education
• #photon_density
• #what_is_photon_density
• #what_do_you_mean_by_density_of_state
• #how_do_you_find_the_density_of_a_photon
• #how_do_you_calculate_the_density
• #how_do_you_find_the_density_of_a_photon
• #what_is_phonon_density_state
• #what_is_density_of_states_function
• #number_density_of_photons
• #density_of_states_in_phase_space
• #photon_density_of_states