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11 terms
Photonics Dictionary: P
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laser dyes x
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phase conjugation
The use of a reflective device, which can be fashioned from a variety of materials including gases, solids, dyes, aerosols, semiconductor crystals and plasmas, to replicate a laser beam by reversing...
photodynamic therapy
A medical technology that uses lasers or other light sources in combination with photosensitizing drugs to treat cancerous tumors.
photon correlation spectroscopy
Spectroscopy used to study the concentration, diffusion and Brownian motion of small particles suspended in a fluid by measuring dynamic fluctuations of light that is scattered or fluoresced by the...
photoradiation therapy
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photodynamic therapy
A medical technology that uses lasers or other light sources in combination with photosensitizing drugs to treat cancerous tumors.
photosensitizer
A substance that increases a material's sensitivity to electromagnetic irradiation. In photodynamic therapy, a drug used to render a target tissue sensitive to laser light.
picosecond pulse
A pulse having extremely short duration, about 10-13 to 10-10 s, that is produced by mode locking of wide-bandwidth lasers, such as the organic dye and ruby lasers. Picosecond pulses are used in the...
picosecond spectroscopy
A method of measuring complex sequential photosynthetic reactions by varying the pulse time and wavelength of light generated by a combination of argon-ion and dye lasers.
polygonal mirror
A polygonal mirror, also known as a multifaceted mirror or facet mirror, is a type of optical component used in various laser systems, optical scanners, and imaging devices. It consists of a flat or...
pulsed-dye laser
A laser with a gain medium consisting of an organic dye, which is carbon-based. The dye is mixed with a solvent, allowing the molecules to diffuse evenly throughout the liquid. The dye medium is...
pyroelectric infrared detector
Unlike the thermocouple or bolometer, the pyroelectric infrared detector is a current source with an output proportional to the rate of change of its temperature. Capable of extremely rapid response...
pyroelectric pulse detector
A current-source thermal detector used to detect and study the pulses obtained from particular lasers.
Photonics Dictionary
P
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