photodetector: meaning, definition, pronunciation and examples
C2technical, academic
Quick answer
What does “photodetector” mean?
A device that converts light (photons) into an electrical signal.
Audio
Pronunciation
Definition
Meaning and Definition
A device that converts light (photons) into an electrical signal.
A specialized electronic sensor designed to detect the presence or measure the intensity of electromagnetic radiation, particularly in the visible, ultraviolet, or infrared spectrum. It functions as the core component in applications ranging from simple light sensors to complex imaging and communication systems.
Dialectal Variation
British vs American Usage
Differences
No significant spelling or definition differences. The compound word is consistently spelled as one word.
Connotations
None beyond the technical meaning.
Frequency
Equally low-frequency in both dialects, confined to engineering, physics, and technology contexts.
Grammar
How to Use “photodetector” in a Sentence
The [type] photodetector [verbs: detects, measures, converts] [light source].A photodetector was [verbs: placed, connected, calibrated] to [achieve purpose].Vocabulary
Collocations
Examples
Examples of “photodetector” in a Sentence
verb
British English
- The system is designed to photodetect signals in the near-infrared spectrum. (rare, derived)
American English
- This circuit can photodetect rapid pulses of light. (rare, derived)
adverb
British English
- (No standard adverbial form. 'Photoelectrically' might describe the process.)
American English
- (No standard adverbial form. The signal was converted photoelectrically.)
adjective
British English
- The photodetector sensitivity is crucial. (noun used attributively)
- We need photodetector-grade silicon. (compound adjective)
American English
- Check the photodetector response time. (noun used attributively)
- It's a photodetector-based system. (compound adjective)
Usage
Meaning in Context
Business
Rare. Might appear in technical specifications, R&D reports, or product descriptions for optical equipment.
Academic
Common in physics, electronic engineering, and optics papers, theses, and textbooks.
Everyday
Virtually never used.
Technical
The primary domain. Standard term in datasheets, lab manuals, and technical discussions involving optical measurement, fibre optics, or imaging systems.
Vocabulary
Synonyms of “photodetector”
Vocabulary
Antonyms of “photodetector”
Watch out
Common Mistakes When Using “photodetector”
- Misspelling as two words: 'photo detector'.
- Confusing it with 'photodiode' (a *type* of photodetector).
- Using it in non-technical contexts where 'light sensor' would be clearer.
FAQ
Frequently Asked Questions
They operate on a similar principle (converting light to electricity), but a solar panel is optimized for power generation, while a photodetector is optimized for speed and sensitivity for signal detection or measurement.
The photodiode is one of the most common and fundamental types of semiconductor photodetector.
A single photodetector measures total light intensity. To form an image, an array of many tiny photodetectors (like in a CCD or CMOS sensor) is used.
Yes. It's a closed compound formed from 'photo-' (light) and 'detector'. It should be written as one word.
A device that converts light (photons) into an electrical signal.
Photodetector is usually technical, academic in register.
Photodetector: in British English it is pronounced /ˌfəʊ.təʊ.dɪˈtɛk.tə/, and in American English it is pronounced /ˌfoʊ.t̬oʊ.dɪˈtek.tɚ/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “None”
Learning
Memory Aids
Mnemonic
Think: **PHOTO**graph + **DETECTOR** = a detector for light, like a camera's sensor.
Conceptual Metaphor
AN EYE FOR A MACHINE (It is the component that allows a machine to 'see' light).
Practice
Quiz
What is the primary function of a photodetector?