Lasers
What is a laser? - answer a device that controls the way that energized atoms release
photons.
What is LASER an acronym for? - answer Light
Amplification by
Stimulate
Emission of
Radiation
What are the three laser light properties? - answer Monochromic, coherent, and
directional
What is monochromatic? - answer Contains one specific wavelength of light (one
specific color). the wavelength of light is determined by the amount of energy released
when the electron drops to a lower orbit.
What is coherent? - answer It is "organized"-- each photon moves into step with other.
Meaning all the photons have waves fronts that lunch in unison
What is directional in terms of laser light vs. flashlight? - answer A laser light has a very
tight beam and is very strong and concentrated. A flashlight in contrast releases light in
many directions,t he light is very weak and diffuses.
Insert slide 4 - answer...
Should you look into a laser with your eyes to make sure it's working? - answerNope.
What are the four medical lasers? - answer1. Carbon Dioxide laser
2. ND-YAG laser
3. KTP laser
4. Argon laser
What is a Carbon Dioxide laser? When is it used? - answer- Invisible (marked w/
helium-neon aiming beam)
- Widely used for upper airway surgery
What is a ND-YAG laser? When is it used? - answerNeodymium-yttrium aluminum-
garnet laser. Short wavelengths allows transmissions by fiberoptics
- Used on distal tracheobronchial tree and retina surgery
, What is a KTP laser? When is it used? - answer-Potassium-titanylphosphate laser. Can
be transmitted by fiberoptics
-Used in neurosurgical and otolaryngeal surgeries
What is a Argon laser? When is it used? - answer- Can be transmitted by fiberoptics.
-Useful in neurological,retinal, and otolaryngological procedures
Which laser cannot be transmitted by fiberoptics?? - answerCarbon dioxide
laser wavelength to power - answerppt 8
What is the wavelength for argon? - answer488-515 (blue/green)
What is the wavelength for KTP? (frequency doubled YAG) - answer532 (green)
What is the wavelength for dye laser? - answervariable with dyes
What is the wavelength for Nd:YAG? - answer1064 (near infrared)
What is the wavelength for CO₂? - answer10,600 (far infrared)
What is the wavelength for He-Ne? - answer633 (red)
What are the general considerations for argon? - answer- Absorbed selectively by Hgb
and melanin or other similar pigments
-Transmitted through clear substances
-Tissue penetration: 0.5 to 2 mm
What are the general considerations for KTP? (frequency doubled YAG) - answer-
Strongly absorbed by Hbg, melanin, and similar pigments
-Transmitted through clear substances
-Tissue penetration: 0.5-2 mm
What are the general considerations for dye laser? - answer- Wavelength can be tuned
to suit application; eg 585nm (yellow) for hemoglobin absorption and 630nm (red) for
photodynamic therapy
What are the general considerations for Nd:YAG? - answer-More readily absorbed by
dark tissue
-Transmitted through clear fluids
- Tissue penetration: 0.5 to 2 mm
What are the general considerations for CO₂ laser? - answer-Strongly absorbed by
water and thus by all tissue, pigmented or not
-Tissue penetration: <0.5 mm
What is a laser? - answer a device that controls the way that energized atoms release
photons.
What is LASER an acronym for? - answer Light
Amplification by
Stimulate
Emission of
Radiation
What are the three laser light properties? - answer Monochromic, coherent, and
directional
What is monochromatic? - answer Contains one specific wavelength of light (one
specific color). the wavelength of light is determined by the amount of energy released
when the electron drops to a lower orbit.
What is coherent? - answer It is "organized"-- each photon moves into step with other.
Meaning all the photons have waves fronts that lunch in unison
What is directional in terms of laser light vs. flashlight? - answer A laser light has a very
tight beam and is very strong and concentrated. A flashlight in contrast releases light in
many directions,t he light is very weak and diffuses.
Insert slide 4 - answer...
Should you look into a laser with your eyes to make sure it's working? - answerNope.
What are the four medical lasers? - answer1. Carbon Dioxide laser
2. ND-YAG laser
3. KTP laser
4. Argon laser
What is a Carbon Dioxide laser? When is it used? - answer- Invisible (marked w/
helium-neon aiming beam)
- Widely used for upper airway surgery
What is a ND-YAG laser? When is it used? - answerNeodymium-yttrium aluminum-
garnet laser. Short wavelengths allows transmissions by fiberoptics
- Used on distal tracheobronchial tree and retina surgery
, What is a KTP laser? When is it used? - answer-Potassium-titanylphosphate laser. Can
be transmitted by fiberoptics
-Used in neurosurgical and otolaryngeal surgeries
What is a Argon laser? When is it used? - answer- Can be transmitted by fiberoptics.
-Useful in neurological,retinal, and otolaryngological procedures
Which laser cannot be transmitted by fiberoptics?? - answerCarbon dioxide
laser wavelength to power - answerppt 8
What is the wavelength for argon? - answer488-515 (blue/green)
What is the wavelength for KTP? (frequency doubled YAG) - answer532 (green)
What is the wavelength for dye laser? - answervariable with dyes
What is the wavelength for Nd:YAG? - answer1064 (near infrared)
What is the wavelength for CO₂? - answer10,600 (far infrared)
What is the wavelength for He-Ne? - answer633 (red)
What are the general considerations for argon? - answer- Absorbed selectively by Hgb
and melanin or other similar pigments
-Transmitted through clear substances
-Tissue penetration: 0.5 to 2 mm
What are the general considerations for KTP? (frequency doubled YAG) - answer-
Strongly absorbed by Hbg, melanin, and similar pigments
-Transmitted through clear substances
-Tissue penetration: 0.5-2 mm
What are the general considerations for dye laser? - answer- Wavelength can be tuned
to suit application; eg 585nm (yellow) for hemoglobin absorption and 630nm (red) for
photodynamic therapy
What are the general considerations for Nd:YAG? - answer-More readily absorbed by
dark tissue
-Transmitted through clear fluids
- Tissue penetration: 0.5 to 2 mm
What are the general considerations for CO₂ laser? - answer-Strongly absorbed by
water and thus by all tissue, pigmented or not
-Tissue penetration: <0.5 mm
