发明名称 |
PULSED FIBER LASER WITH DOUBLE- PASS PUMPING |
摘要 |
A pulsed fiber laser oscillator comprising in succession: a pumping source (10) for providing pumping energy at a first wavelength to a multimode optical fiber; a first Bragg grating optical filter (11) reflecting a second wavelength and transparent to said first wavelength; an active optical fiber (20) having a predefined wavelength which emits radiation at said second wavelength; a switch (14) arranged to periodically interrupt said second wavelength to provide a pulsed laser beam; and a second Bragg grating optical filter (15) partially reflecting said second wavelength; characterized by comprising, following said active optical fiber (20), a reflector (21) of said first wavelength, such that said pumping energy undergoes two passages within said active optical fiber (20); said predefined wavelength being determined such that the absorption of said pumping energy at said first wavelength within said active optical fiber (20) is greater than 80% after undergoing said two passages. |
申请公布号 |
EP2801130(A1) |
申请公布日期 |
2014.11.12 |
申请号 |
EP20120818571 |
申请日期 |
2012.12.19 |
申请人 |
DATALOGIC AUTOMATION S.R.L. |
发明人 |
TAGLIAFERRI, MARCO;CANNONE, FABIO;NOLLI, DANIELA |
分类号 |
H01S3/067;H01S3/094;H01S3/102;H01S3/113;H01S3/117;H01S3/16 |
主分类号 |
H01S3/067 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|