Green Laser PointersMac Herrera

Green Laser Pointers

• Diode-Pumped Solid State Frequency-Doubled Lasers (DPSSFDL)

• 5mW maximum

Solid state lasers

• Solid lasing medium• Nearly identical except: energy bands • Coulomb potential

3

Solid state lasers

• Nd:YAG (neodymium:yttrium aluminum garnet)

• 4 level laser

2

Diode pumping

• Laser diode

• Very similar to LEDs except 2 things

• pump at 808nm

2

Frequency-doubling

• Harmonic generation

• Non-linear optics

• E = E0cosωtKTP

• P = ε0(χ1E+ χ2E2+ χ3E3+ χ4E4+···)

• KTP (Potassium-trihydrogen-phosphate)

1

1

Acknowledgements

• Miriam Takeko Graf

• Dustin Kyoon Brumley Esq.

• (1)repairfaq.ece.drexel.edu/sam/lasersam.htm

• (2) The Laser Guidebook (Hecht, 1986)

• (3) High-Power Diode Lasers (Diehl, 2000)