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US3768036A Expired / Lapsed US ⏱️ 0.0 years remaining

Device for producing stimulated infrared emission, an iraser, having a wavelength of approximately 10.6u by means of an electric discharge in a gas mixture consisting partly of carbonic acid gas, and electric discharge tube destined for such a device

Assignee: US Philips Corp
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Filing: 1972-11-07
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Granted: 1973-10-23
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Expires: 1992-11-07
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Abstract

Abstract According to the invention, a device is provided for producing stimulated infrared emission, an iraser, having a wavelength of approximately 10.6 by means of an electric discharge having a current density exceeding 15 mA/sq.cm in a gas mixture. The mixture consists of carbonic acid gas, nitrogen, helium and water vapour in a discharge tube of a few metres length and which includes a plane parallel plate of germanium having a thickness of approxmately 2 mm as output coupling window and also as a reflector. The discharge tube has a diameter of maximally 10 mm, the water vapour pressure is from 0.3 to 0.4 Torr and the ends of the discharge tube are connected by a narrow communication tube in which no discharge takes place.

Inventors

  • 👤 W Witteman
  • 👤 Dam H Van

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 18:46
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/14; H01S3/22; H01S3/223; H01S3/2232; H01S3/02; H01S3/03; H01S3/034; H01S3/036; H01S3/05; H01S3/08

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 20 words
A device as claimed in claim 1, wherein at one level of current density only the purely axial mode occurs.
Claim 2
Dependent Claim 20 words
A device as claimed in claim 1, wherein at one level of current density only the first transversal mode occurs.

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) 1976-10-22 1977-04-23 1977-10-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-10-22 1981-04-23 1981-10-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-10-22 1985-04-23 1985-10-23 $7700.00 Window Closed / Lapsed

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