Output-power control apparatus for a CO2 gas-discharge laser
US8731014B2 · kind B2 · utility
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11References
13Claims
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Key dates
| Filing date | Feb 2, 2012 |
| Grant date | May 20, 2014 |
| Priority date | — |
| Expiry date | Jun 10, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/2232
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A carbon-dioxide CO2 gas-discharge laser is energized by the output a radio-frequency power supply (RFPS). Output-power of the laser is stabilized by adjustments of the RFPS responsive to periodic measurements of the laser output-power using detector output amplified by an amplifier. The amplifier has an offset-voltage which is subject to drift. A synchronous auto-zero arrangement is provided for canceling out the offset-voltage of the amplifier immediately prior to each periodic measurement of the laser output power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.