Invention Grant
- Patent Title: Wavelength-stabilized frequency-converted optically pumped semiconductor laser
- Patent Title (中): 波长稳定的变频光泵浦半导体激光器
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Application No.: US13632372Application Date: 2012-10-01
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Publication No.: US08761213B2Publication Date: 2014-06-24
- Inventor: Wolf Seelert , Vasiliy Ostroumov
- Applicant: Coherent GmbH
- Applicant Address: DE Göttingen
- Assignee: Coherent GmbH
- Current Assignee: Coherent GmbH
- Current Assignee Address: DE Göttingen
- Agency: Morrison & Foerster LLP
- Main IPC: H01S3/10
- IPC: H01S3/10 ; H01S3/00 ; H01S3/02 ; H01S3/08 ; H01S3/09 ; H01S3/091 ; H01S3/093 ; H01S3/04 ; H01S3/102
Abstract:
A frequency-doubled OPS-laser having a desired output wavelength of 532 nm is tunable about that wavelength by a temperature tuned birefringent filter (BRF). The temperature of the BRF is varied while measuring transmission of a sample of the output through a Nd:YAG crystal having an absorption peak at a wavelength of about 532.4 nm. The peak is detected as a minimum of transmission and the temperature at which that minimum occurs is recorded. From wavelength-change-versus-temperature data for the BRF a temperature is calculated at which the output wavelength has the desired value and is maintained at that value to stabilize the output wavelength.
Public/Granted literature
- US20140092926A1 WAVELENGTH-STABILIZED FREQUENCY-CONVERTED OPTICALLY PUMPED SEMICONDUCTOR LASER Public/Granted day:2014-04-03
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