EE231 Optical Electronics - Class outline

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EE231 Optical Electronics - Class outline

• Class website http//www.cse.ucsc.edu/classes/ee
  231/Fall03/
• Instructor Claire Gu, BE 253B,
  claire_at_soe.ucsc.edu
• Lecture Tue/Thu 10-1145, Stevenson 221
• Office hours Wed 2-4 pm
• Homework bi-weekly
• Grading policy

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EE231 Optical Electronics - Class outline II

• Midterm Written, in class
• Final during the finals week
• Project
• investigate class-related subject
• literature review
• problem/calculation
• assigned or student-suggested -gt talk to me
• term paper and in-class presentation
• class content mainly lasers, but well really
  learn much more
• optics
• physics
• materials
• systems

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Electromagnetic Spectrum
4
Different types of lasers
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Laser characteristics

• spectrally broad
• divergent
• cant be focused tightly
• not very intense
• incoherent

• very monochromatic
• does not diverge as fast
• can be focused tightly
• can be extremely intense
• spatial coherence (interference)
• temporally coherent (beat notes)

What is needed ?

• More generally
• active medium
• pump -gt far from thermal equilibrium
• feedback (resonator, mirrors)

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Laser characteristics II -Threshold
spectral narrowing
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Laser history
1910
1970
1980
1990
2000
1920
1930
1940
1950
1960
8
Lasers in science
9
Lasers in medicine
10
Lasers in every day life

• laser cutting
• laser welding
• ....

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Lasers in communication systems