Heterodyne laser instantaneous frequency measurement system
Patent
·
OSTI ID:6541529
This patent describes a laser beam frequency diagnostic system. It comprises: a first pulsed laser for generating a first short time duration pulsed laser beam having a pulse length duration of approximately 10--100 nanoseconds, the instantaneous frequency of which is to be determined, a second reference laser for generating a second laser beam having a predetermined frequency, means for heterodyning the first and second laser beams to form a beat signal representative of the difference between the first and second frequencies, and means for processing the beat signal with respect to time to determine the instantaneous frequency of the first laser beam.
- Assignee:
- Dept. of Energy, Washington, DC (USA)
- Patent Number(s):
- A; US 4940331
- Application Number:
- PPN: US s 7-249816
- OSTI ID:
- 6541529
- Country of Publication:
- United States
- Language:
- English
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