US3636474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrashort optical pulse generation utilizing laserpumped lasers
Assignee: RTX Corp
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Filing: 1968-11-27
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Granted: 1972-01-18
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Expires: 1988-11-27
Abstract
Abstract A mode-locked laser generating a train of repetitive pulses is used to optically pump other lasers such as organic dye lasers. The repetitive pulses will provide an amplitude modulation of the gain of the pumped laser, and will mode-lock the oscillating modes of the pumped laser output, producing a series of repetitive pulses from the pumped laser.
Inventors
- 👤 Anthony J Demaria
- 👤 William H Glenn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:13
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/10; H01S3/11; H01S3/1106; H01S3/1112; H01S3/1115; H01S3/09; H01S3/091; H01S3/094; H01S3/094026; H01S3/1109
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
30 words
A method as in claim 1 and including the step of directing the mode-locked pulses from said first laser to intersect said organic dye laser along the optical axis thereof.
Claim 2
Dependent Claim
36 words
A method as in claim 1 in which said organic dye laser is in solution, and including the step of varying the mixture of said solution to vary the spectral output from said organic dye laser.
Claim 3
Dependent Claim
131 words
Apparatus for producing a train of mode-locked pulses from an organic dye laser comprising a first laser including an optical feedback cavity for generating a train of mode-locked pulses at the pumping wavelength of said organic dye laser, an optical feedback cavity for said organic dye laser having a length which is an integral multiple or submultiple of the cavity length of said first laser, and means for directing said mode-locked pulses from said first laser to intersect said organic dye laser and to modulate the gain of at least a portion of said organic dye laser to produce a train of mode-locked laser pulses from said organic dye laser having a wavelength which is an integral multiple or submultiple of the wavelength of said mode-locked pulses from said first laser.
Claim 4
Dependent Claim
23 words
Apparatus as in claim 4 in which the mode-locked pulses from said first laser intersect said organic dye laser along its optical axis.
Claim 5
Dependent Claim
34 words
Apparatus as in claim 4 in which said organic dye laser is a solution, and consists of a mixture of organic dyes selected to produce a desired spectral output from said organic dye laser.
Claim 6
Dependent Claim
134 words
Apparatus for producing a train of mode-locked pulses from an organic dye laser comprising a first laser, an optical feedback cavity for said first laser including first and second mirrors, means for producing a train of mode-locked pulses from said first laser, a feedback cavity for said organic dye laser including third and fourth mirrors spaced apart a distance equal to an integral multiple or submultiple of the distance between said first and second mirrors, and means for directing said mode-locked pulses from said first laser to intersect said organic dye laser along its optical axis and modulate the gain of said organic dye laser to produce therefrom a train of mode-locked pulses having a wavelength which is an integral multiple or submultiple of the wavelength of the mode-locked pulses from said first laser.
Claim 7
Dependent Claim
38 words
Apparatus as in claim 7 in which said second and third mirrors comprise a single transmissive element with reflective coatings on two opposite faces thereof, said faces being out of parallel from each other by a small angle.
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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |