Register
Sign In
Suppliers
Products
Categories
Handbook
Dictionary
Careers
Resources
Photonics Spectra
BioPhotonics
Vision Spectra
Virtual Events & Summits
Educational Institutions
Add/Update Your Listing
Exhibitor Listing Portal
Become an Exhibitor
Buyers' Guide Print Edition
Marketplace Help
Subscribe
Advertise
Suppliers
Products
Categories
Handbook
Dictionary
Careers
Resources
Photonics Spectra
BioPhotonics
Vision Spectra
Virtual Events & Summits
Educational Institutions
Add/Update Your Listing
Exhibitor Listing Portal
Become an Exhibitor
Buyers' Guide Print Edition
Marketplace Help
Register
Sign In
Photonics Marketplace
Suppliers
Products
Handbook
Institutions
Dictionary
Show Filters
Hide Filters
Type
Definitions
Abbreviations/Acronyms
Browse by Letter
#
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
8,289 terms
Photonics Dictionary
Clear All Filters x
ns x
drift curve
A technique used in astronomy that requires a radio telescope to be directed at a point in the sky west of the object under observation. The Earth's rotation causes the object to drift through the...
drift scan
An astronomical scanning technique for capturing images of stars without moving the sensor. To perform a drift scan, a CCD sensor's readout rate must be synchronized with the motion of celestial...
drive
The hardware for reading (and writing in devices so equipped) an optical mass data storage disk.
driving current
The minimum electrical current input needed to initiate lasing.
dropping
The process whereby a blank or disc is heated to a sufficiently high temperature to sag into a mold having a desired curvature.
DRTL
diode resistor transistor logic
drum camera
A type of streak camera that uses film wrapped around a drum, which moves at a constant speed to record the changing shape of a short-lived event, such as a lightning flash.
drum scanner
An image-processing device that scans in a straight line parallel to the axis of a rotating cylinder to which the material to be recorded is affixed.
dry objective
A microscope objective designed to be used without liquid between the cover glass and the objective, or, in the case of metallurgical objectives, between the objective and the specimen.
DSA
digital subtraction angiography
DSF
dispersion-shifted fiber
DSFS
Doppler shift frequency spectrum
DSL
digital subscriber line
DSM
dynamic scattering mode
DSP
digital signal processing
DSW
direct step on wafer
DT
digital tomography; distant terminal
DTGS
deuterated triglycine sulfate
DTIC
Defense Technical Information Center
DTS
deuterated triglycine sulfate
dual attachment station
In a dual-ring local area network, a node that is connected both to the primary, active ring and also to a secondary ring that provides redundancy in case of cable or system failure.
dual inline package
A package for electronic components that is suited for automated assembly into printed circuit boards. The DIP is characterized by two rows of external connecting terminals or pins, which are...
dual laser
A gas laser equipped with Brewster windows and concave mirrors (having unlike reflective properties) at each end of the tube to produce two separate wavelengths at the same time.
dual-axis laser
Dual-axis laser is a laser device or system capable of emitting laser beams along two orthogonal axes (typically X and Y axes) concurrently. This allows for precise control and manipulation of the...
dual-chirped optical parametric amplification
Dual-chirped optical parametric amplification (DC-OPA) is an advanced technique in ultrafast laser technology used to amplify femtosecond laser pulses to extremely high energies while maintaining...
dual-wavelength spectrophotometry
Spectrophotometry in which radiation of two separate wavelengths, usually one in an absorption band and the other not, pass through the specimen. The resulting data allows correction for attenuation...
dual-window cable
->
double-window fiber
Optical fiber capable of operating at both a shorter and a longer wavelength.
ductility
A material's ability to undergo plastic deformation, specifically elongation, without fracturing.
ducting
Propagation of electromagnetic waves through the Earth's atmosphere in a path that conforms to the curvature of the Earth due to atmospheric thermal inversion. Regions of the atmosphere act as a...
duplex
In data communications, the simultaneous operation of a circuit in both directions is known as full duplex; if only one transmitter can send at a time, the system is called half duplex.
dust counter
An instrument that uses a photoelectric system to determine the size and volume of dust particles in a given unit of air.
dust counting microscope
A microscope that has been modified to permit the quantitative analysis of dust samples.
dust extinction
In atmospheric optics, the almost total blocking of light transmission in the atmosphere due to the scattering and absorption of the light by dust particles.
duty cycle
Also duty factor, duty ratio. The product of the pulse duration and the pulse repetition frequency of a wave composed of pulses that occur at regular intervals.
DVDR
direct-view diagnostic region
DVI
digital video interaction
DWDM
dense wavelength division multiplexing
dwell time
For a detector, the amount of time alotted for the observation of one location.
DWG
digital waveform generator
dye
->
laser dye
Class of organic dyes that emit coherent radiation over a wide spectral range.
dye laser
A laser using a dye solution as its active medium. Its output is a short pulse of broad spectral content and its achievable gain is high. Dye lasers function at room temperature. Synchronous pumping...
dye-polymer optical disc
A type of erasable data storage device that uses a medium deposited on the disc in two layers, each dyed to absorb a different wavelength of laser light. To record data, the lower layer is heated by...
dyn
dyne
dynamic beam correction
The superimposition of a pilot object on each hologram. The fixed relative position of the scanning and pilot beam during the recording process ensures that sensing and fixing the pilot beam position...
dynamic fatigue
Stress applied to an optical fiber at a constant rate.
dynamic light scattering spectroscopy
->
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...
dynamic magneto-optical correlator
An optical correlator incorporating a binary phase-only spatial light modulator made from an iron garnet magneto-optic solid crystal and used in target recognition systems.
dynamic spectroscopy
A spectroscopic technique used to display the intensity of an optical pulse as functions of time and frequency simultaneously.
dynamic theory
The theoretical explanation and analysis of the interactions between electron waves and crystals used in studying electron diffraction.
dynamic variation
In electrical equipment, power variations that are temporary (as opposed to the permanent, cumulative effects of drift).
<
1
2
3
...
50
51
52
53
54
...
164
165
166
>
Photonics Dictionary
Need Help?
Explore Our Content
News
Features
Latest Products
Webinars
White Papers
All Things Photonics Podcast
Videos
Our Summits & Conferences
Industry Events
Bookstore
Join Our Community
Subscribe
Advertise
Become a member
Sign in
Contribute a Feature
Suggest a Webinar
Submit a Press Release
Mobile Apps
About Us
Our Company
Our Publications
Contact Us
Career Opportunities
Teddi C. Laurin Scholarship
Terms & Conditions
Privacy Policy
California Consumer Privacy Act (CCPA)
©2024 Photonics Media
100 West St.
Pittsfield, MA, 01201 USA
[email protected]
We use cookies to improve user experience and analyze our website traffic as stated in our
Privacy Policy
. By using this website, you agree to the use of
cookies
unless you have disabled them.