a) Problem 9.6 of Textbook: If the spot size at the mirror of a helium-neon laser is 0.5mm, what is the length of the laser cavity? The cavity is of the confocal-type and the wavelength is 633nm. b) For a semiconductor laser diode, the output power is 2mW and 4.5mW when the diode drive (injected) current is 50mA and 55mA, respectively. What is the threshold current (ith) of this laser diode? 4.
a) Problem 9.6 of Textbook: If the spot size at the mirror of a helium-neon laser is 0.5mm, what is the length of the laser cavity? The cavity is of the confocal-type and the wavelength is 633nm. b) For a semiconductor laser diode, the output power is 2mW and 4.5mW when the diode drive (injected) current is 50mA and 55mA, respectively. What is the threshold current (ith) of this laser diode? 4.
Chapter8: Electromagnetism And Em Waves
Section: Chapter Questions
Problem 9Q
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Question
![a) Problem 9.6 of Textbook: If the spot size at the mirror of a helium-neon laser is 0.5mm, what is
the length of the laser cavity? The cavity is of the confocal-type and the wavelength is 633nm.
b) For a semiconductor laser diode, the output power is 2mW and 4.5mW when the diode drive
(injected) current is 50mA and 55mA, respectively. What is the threshold current (ith) of this
laser diode?
4.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff08ef3aa-ff84-4dc1-b822-a3abf91385d0%2Ffa7e2cac-088d-48e1-8388-7818c1edf15d%2Fvx7he9_processed.jpeg&w=3840&q=75)
Transcribed Image Text:a) Problem 9.6 of Textbook: If the spot size at the mirror of a helium-neon laser is 0.5mm, what is
the length of the laser cavity? The cavity is of the confocal-type and the wavelength is 633nm.
b) For a semiconductor laser diode, the output power is 2mW and 4.5mW when the diode drive
(injected) current is 50mA and 55mA, respectively. What is the threshold current (ith) of this
laser diode?
4.
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