US3665338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable frequency infra red source
Assignee: SYNERGETICS RESEARCH Inc
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Filing: 1969-10-28
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Granted: 1972-05-23
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Expires: 1989-10-28
Abstract
Abstract A variable frequency infrared source in which the output of a laser of a fixed wave length and the output of a variable wave length laser are mixed in a nonlinear medium to produce an output containing a separable component in the infrared region, the frequency of which can be varied over substantially the entire infrared spectrum by varying the wave length of the variable laser.
Inventors
- 👤 Robert B Harris
- 👤 John A Macdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:06
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/35; G02F1/353; G02F1/3534; H; H01; H01S; H01S3/00; H01S3/10; H01S3/106; H01S3/108
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
128 words
A source of frequency variable infrared radiation including in combination, a first laser for producing a first beam of radiation at a fixed wave length, a second organic dye laser for producing a second beam of radiation the wave length of which can be varied oveR a predetermined range, means for activating said lasers in synchronism to cause them to produce said first and second beams, means for combining said first and second beams, an element having a nonlinear response to incident radiation, means for directing said combined beams onto said element to cause the element to produce output radiation containing a component in the infrared region, and manually operable means for varying the wave length of said second beam to vary the frequency of said infrared component.
Claim 2
Dependent Claim
128 words
A source of frequency variable infrared radiation including in combination, a first laser for producing a first beam of radiation at a fixed wave length, a second organic dye laser for producing a second beam of radiation the wave length of which can be varied oveR a predetermined range, means for activating said lasers in synchronism to cause them to produce said first and second beams, means for combining said first and second beams, an element having a nonlinear response to incident radiation, means for directing said combined beams onto said element to cause the element to produce output radiation containing a component in the infrared region, and manually operable means for varying the wave length of said second beam to vary the frequency of said infrared component.
Claim 3
Dependent Claim
20 words
A source as in claim 1 in which said means for producing said first beam is a pulsed ruby laser.
Claim 4
Dependent Claim
20 words
A source as in claim 1 in which said means for producing said first beam is a continuous wave laser.
Claim 5
Dependent Claim
20 words
A source as in claim 1 in which said means for producing said first beam is a pulsed ion laser.
Claim 6
Dependent Claim
29 words
A source as in claim 1 in which each of said first and second beam producing means is a pulsed laser and means for pulsing said lasers in synchronism.
Claim 7
Dependent Claim
30 words
A source as in claim 1 in which said element produces said infrared radiation and unwanted radiation, said source including means for separating said infrared radiation from said unwanted radiation.
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) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |