a) Calculate the characteristic temperature associated with a vibrational energy level transition of angular frequency w = 2x10¹³ rads¹. b. A process "freezes out" at temperatures below 42 K. Calculate the typical energy associated with this process.
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- The main feature of photo-detectors made of high energy gap semiconductors is that: O a. They have very small dark current. O b. Their absorption coefficients are quite large. O c. A large number of photons is needed to boost their resulting current. O d. Thin samples are needed for such detectors O e. NON of the given choices is correct.6. The value of the vibrational partition function for a system is 9, and the value of the rotational partition function for a system is 114. If these two partition functions are the only ones that contribute to the total partition function of the system, what is the value of the total partition function?A Sal has the deg density psl.65g/cm ,w.-10% and Go=27. Using phase d.. a. lod ratio (e) b. hatal, knsity ( Pe) C. Jegrecaf Satamtm (sr). Saturan had dasity Put.
- Q2/ For the harmonic oscillator in classical limit, if the partition function is given by Z(B) = 1/(ßħw)N, find the entropy and internal energy. Q3/ Prove that F = -KTlnz .d. What is the population inversion condition in semiconductor laser? How can you obtain population inversion condition? e. Draw and describe a typical structure of avalanche photodiode? Why do they make a p+ layer located at the encounter electrode?The R-branch of a vibrational-rotational spectrum consists of lines of increasing frequency. O True False Question 9 3 When the total energy of a system is a sum of individual contributions, the partition function is a product of individual contributions. O True O False
- OptoelectronicsM Inbox (44,3 x w Virginia Cor X Frcc Chapter 4 H x Visual session.masteringphysics.com/myct/itemView?assig Apps Getting Started Thomson Reuters o ADP ezLaborManag Ch 07 HW Exercise 7.35 - Enhanced - with Feedback The potential energy of two atoms in a diatomic molecule is approximated by U (r) = a/r-b/r°, where r is the spacing between atoms and a and b are positive constants.