LASER Chapter

Photons striking similar excited atoms will induce the process, a chain reaction occurs where production of photons amps

The distance between peaks of energy is measured in __________

Surrounds the active medium, has mirrors that reflect photons back and forth and as they collide they multiply and +

used in some skin rejuvenation procedures where topicals are activated by emitted light

What does STAR mean?

Blood changes from a liquid to a solid causing deterioration of the target chromophore or structure

the rate at which specific chormophores will absorb given wavelengths.

Invisible to the human eye, Non-Ionizing, and slightly weaker than visible light

Occurs when photons change direction and travel to unwanted tissue. Ex: Gets Distracted

A combination of hardware and software that work together to control the release of laser light on to the skin

Thermal, Coagulation of vessel wall

Source of electricity used to excite the atoms

Intended target is covered or surrounded by chromophores

Vein Therapy Chromophore and Example

occurs when photons are absorbed by the tissue- this is the goal. Has a target and absorbs it.

Maximum Optical power a laser pulse will attain.

when photons travel as a single unit with the same distance between peaks and troughs of energy.

The range of wavelengths or frequencies over which electromagnetic radiation extends.

Thermal Reaction, Coagulation of vessel, Ablation of the bulge containing the stem cells.

when heat is used to produce the desired effect in cosmetic applications such as LHR, Skin rejuvenation, etc

1 trillionth of a second

Emit energy in the form of photons, will always seek to return to its original energy level

Acoustic, Ablation of tattoo ink

allows lasers to all travel to a focused spot size

Grouping of cells within the tissue structure that absorb light at a specific frequency/wavelength. Chromaphore=target

Non- harmful radiation and does not carry enough energy to ionize other atoms or molecules.

Range of wavelengths visible to the human eye and range from 400nm-700nm

Chemical or Thermal Reaction, Stimulation of dermal fibers

when neither absorption nor transmission of the wavelength are achieved. Reflected off of the skin and dissipates

The term ________ is energy that travels and spreads out as it goes and is also used to refer to light.

Harmful radiation that causes “free radicals”

Ionizing Light within the ranges of 10nm-400nm and is invisible to the human eye and is emitted by the sun

Nanometer (NM) = _______________

3 primary Chromaphores

One single color generated by a single wavelength. Targets Color

The target is damaged only to the point that the bodys natural repair process kicks in and rejuvenates the target.

Atoms consists of a nucleus, orbited by electrons

What does LASER stand for

achieved when photons are delivered at very high speeds such as NS OR PS

When the photons pass through the skin without being absorbed by any specific target chromophore.

What are the 3 Unique Characteristics

Atoms are stimulated in order to produce a wavelength of photons. Can be solid, liquid, or gas.

Acoustic or Thermal, Ablation of melanocyte cell

Complete destruction of the target structure. Removes tissue in one single pulse