Types of Lasers and their uses

Question 1

Excimer Lasers

Answer 1

UV-Gas, Pulsed
- ArF, 194 nm
- XeCl, 308nm
- KrF, 248nm

Question 2

Nd:YAG Lasers

Answer 2

Neodymium: Yttrium Aluminum Garnet (YAG)
Solid, pulsed
1064nm or 532nm
1064 = IR
532 = Green

Question 3

CO2 Lasers

Answer 3

Gas, Pulsed
10,600 nm - Infrared

Question 4

Argon-Ion Laser

Answer 4

Gas, CW
514.5nm - Green
488nm - Blue

Question 5

Alexandrite Laser

Answer 5

Solid, Pulsed
755nm - IR

Question 6

Dye Lasers

Answer 6

Liquid, CW or Pulsed
400-800nm

Question 7

Er:YAG

Answer 7

Erbium: Yitrium Aluminum Garnet (YAG)
Solid, CW or Pulsed
2940nm
1540nm
IR

Question 8

Diode Lasers

Answer 8

Solid, CW
700-1500nm (Mostly IR)

Question 9

HeNe Lasers

Answer 9

Helium-Neon Lasers
Gas, CW
632nm (Red)

Question 10

What type of laser is used for Lasik or Angioplasty?

Answer 10

Excimer lasers

Question 11

What are some uses for Nd:YAG lasers

Answer 11

• Eye surgery (macular degeneration)
• Eye floater treatment
• Dermatology (SPider-veins, Hemangiomas)
• Dermatology (hair removal)
• Laser Tattoo removal

Question 12

What are some uses for CO2 lasers?

Answer 12

• Dermatology (Hemangiomas)
• Dentistry
• Veterinary

Question 13

What are some uses for Argon-ion lasers?

Answer 13

• Dermatology (hair removal)

Question 14

Alexandrite laser uses

Answer 14

• Laser tattoo removal

Question 15

Pulsed dye laser uses

Answer 15

Dermatology
- Birthmarks
- Scars
- Facial Redness
- Port wine stains
Tattoo removal

Question 16

Erbium laser uses

Answer 16

• Dentistry
• Dermatology

Question 17

Melanin absorbs light in the 4-500nm range. What type of laser would be ideal to use? What colour would it be

Answer 17

488 Argon-ion laser
It would be a bluish-green color

Question 18

Phthalocyanine absorbs strongly in the 700nm area. What laser would be ideal to use? You do not want blood or melanin to absorb this laser (they absorb in the 4-500 region)
This laser would be used in PDT treatment.

Answer 18

You would wan to use a He-Ne laser. Theyre CW so low power, and they emit wavelengths at 632nm, which is ideal for phthalocyanine absorption and not melanin or blood absorption.