US3247459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plural laser amplifiers in tandem
Assignee: US Philips Corp
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Filing: 1964-05-01
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Granted: 1966-04-19
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Expires: 1984-05-01
Abstract
No abstract record available.
Inventors
- 👤 Adrianus Johannes Wilhel Marie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:59
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/50; H01S3/00; H01S3/14; H01S3/22; H01S3/223
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A LIGHT AMPLIFIER COMPRISING A FIRST DIODE LASER FOR RECEIVING LIGHT TO BE AMPLIFIED, A SECOND DIODE LASER SPACED FROM AND OPTICALLY COUPLED TO SAID FIRST DIODE LASER FOR DERIVING AND PRODUCING AMPLIFIED LIGHT FROM SAID FIRST DIODE LASER, MEANS TO SUPPLY AN ENERGIZING CURRENT MODULATED WITH PERIODIC PULSES TO EACH OF SAID LASERS, THE TRANSIT TIME OF LIGHT BETWEEN SAID LASERS BEING AT LEAST EQUAL TO HALF THE DURATION TIME OF THE PULSES AND THE REPETITION TIME OF THE PULSES BEING AT LEAST TWICE THE DURATION TIME OF THE PULSES, AND MEANS TO DELAY PULSES SUPPLIED TO SAID SECOND LASER WHICH LAG WITH RESPECT TO THOSE FOR THE FIRST LASER BY A TIME DIFFERENCE EQUAL TO THE TRANSIT TIME OF THE LIGHT BETWEEN THE FIRST AND SECOND LASERS.
Claim 2
Dependent Claim
129 words
A LIGHT AMPLIFIER COMPRISING A FIRST DIODE LASER FOR RECEIVING LIGHT TO BE AMPLIFIED, A SECOND DIODE LASER SPACED FROM AND OPTICALLY COUPLED TO SAID FIRST DIODE LASER FOR DERIVING AND PRODUCING AMPLIFIED LIGHT FROM SAID FIRST DIODE LASER, MEANS TO SUPPLY AN ENERGIZING CURRENT MODULATED WITH PERIODIC PULSES TO EACH OF SAID LASERS, THE TRANSIT TIME OF LIGHT BETWEEN SAID LASERS BEING AT LEAST EQUAL TO HALF THE DURATION TIME OF THE PULSES AND THE REPETITION TIME OF THE PULSES BEING AT LEAST TWICE THE DURATION TIME OF THE PULSES, AND MEANS TO DELAY PULSES SUPPLIED TO SAID SECOND LASER WHICH LAG WITH RESPECT TO THOSE FOR THE FIRST LASER BY A TIME DIFFERENCE EQUAL TO THE TRANSIT TIME OF THE LIGHT BETWEEN THE FIRST AND SECOND LASERS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |