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 |
US2015010025(A1) |
申请公布日期 |
2015.01.08 |
申请号 |
US201214369273 |
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 |
主分类号 |
H01S3/067 |
代理机构 |
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代理人 |
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主权项 |
1. A pulsed fiber laser oscillator comprising in succession: a pumping source (10) for providing pumping energy at a first wavelength to a muitimode 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. |
地址 |
Monte San Pietro (BO) IT |