The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 01, 2014
Filed:
Apr. 29, 2011
Daniel J. Riggs, San Diego, CA (US);
Daniel J. Riggs, San Diego, CA (US);
Cymer, LLC, San Diego, CA (US);
Abstract
Methods and systems for controlling the gas concentrations in the chambers of a two chamber gas discharge laser such as an excimer laser are disclosed. A first set of inject opportunities is selected for the laser chamber of the master oscillator, and a second set of inject opportunities is selected for the laser chamber of the power amplifier. At each selected inject opportunity for the master oscillator, its laser chamber receives an inject containing a fixed amount of a non-halogen containing gas, and a calculated amount of a halogen containing gas. At the selected inject opportunities for the power amplifier, its laser chamber receives a fixed amount of the halogen containing gas, and may also receive a fixed amount of the non-halogen containing gas.