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US 2009/0213363 A1Published application
Power monitoring device for powerful fiber laser systems
OwnerDmitry Starodubov, Alexey Mamin +1inventors
InventorsDmitry Starodubov, Alexey Mamin, Denis V. Gapontsev
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Abstract
A pig-tailed optical component used in a powerful fiber laser system is configured with a power monitor unit. The monitor unit has a plate-shaped beam splitter operative to reflect portions of at least one of respective forward and backreflected light signals, and multiple photo-detectors.
Claims25
A power monitor unit for a pigtailed optical system, comprising:
- an input and output collimators spaced apart along an optical path;
- a plate-shaped beam splitter located between the input and output collimators and operative to tap off a portion of at least one of forward propagating and backreflected light signals;
- and
- at least one photodetector optically coupled to the plate-shaped beam splitter and operative to measure a power of the one optical signal upon receiving the tapped-off portion of the light signal.
1 more element
A pigtailed optical isolator for a powerful laser system comprising:
- an isolator core traversed by a forward propagating light signal along a light path;
- and
- a power monitor located along a downstream stretch of the core and including:
- a beam-splitter configured to simultaneously tap off portions of the respective forward propagating light signal and a backreflected light signal, and
- a photo-detector unit optically coupled to the splitter and operative to provide information of powers of the respective forward-propagating and backreflected light signals.
2 more elements
A powerful fiber laser system comprising:
- an optical component located along a light path;
- and
- a plate-shaped beam splitter operative to tap off a portion of at least one of a forward propagating and backreflected light signals;
- and
- a power monitoring unit operative to receive the tapped off portion so as to monitor a power of the one light signal.
2 more elements
A method of monitoring a power of light in a powerful fiber laser unit, comprising:
- tapping off a portion of at least one of forward-propagating and backreflected light signals by a plate-shaped beam splitter located between input and output collimators;
- receiving the tapped off portion of the one light signal by a power measuring unit, thereby monitoring a power of the one light signal.
Dependencies are inferred from the claim text.