Invention Application
- Patent Title: METHOD AND APPARATUS FOR PULSED LASER BEAM CONTROL IN LASER SHOCK PEENING PROCESS
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Application No.: US17905925Application Date: 2021-03-07
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Publication No.: US20230098272A1Publication Date: 2023-03-30
- Inventor: Tianyi Michael Yao , Jeff L Dulaney , Keith Glover , Daniel Merrifield , Mark E. O'Loughlin
- Applicant: Tianyi Michael YAO , Jeff L. DULANEY , Keith GLOVER , Daniel MERRIFIELD , Mark E. O'LOUGHLIN , LSP Technologies, Inc.
- Applicant Address: US OH Worthington; US OH Dublin; US OH Dublin; US OH Dublin; US OH Galloway; US OH Dublin
- Assignee: Tianyi Michael YAO,Jeff L. DULANEY,Keith GLOVER,Daniel MERRIFIELD,Mark E. O'LOUGHLIN,LSP Technologies, Inc.
- Current Assignee: Tianyi Michael YAO,Jeff L. DULANEY,Keith GLOVER,Daniel MERRIFIELD,Mark E. O'LOUGHLIN,LSP Technologies, Inc.
- Current Assignee Address: US OH Worthington; US OH Dublin; US OH Dublin; US OH Dublin; US OH Galloway; US OH Dublin
- International Application: PCT/US21/21273 WO 20210307
- Main IPC: H01S3/11
- IPC: H01S3/11 ; H01S3/0941 ; H01S3/131 ; H01S3/00 ; H01S3/13 ; H01S3/23 ; G02F1/03

Abstract:
An apparatus is provided, the apparatus comprising: (i) a diode-pumped solid-state laser oscillator configured to generate a pulsed laser beam having predefined beam characteristics corresponding to a current setting selection of a controller; and (ii) an amplifier configured to amplify an energy and modify a beam profile of the pulse laser beam. A beam detector is coupled to the generated beam to monitor a combination of: (i) a beam pulse width; (ii) a beam diameter; and (iii) an energy level, and generates an error signal to be sent back as a feedback signal to the controller. The controller configures the current source to output a correction current to tune the DPSSL oscillator, the wave plate, and the first polarizer to rotate a correction polarization angle and adjust the energy amplification or temporal profile to within a defined performance tolerance.
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