Cascade-Gain-Switching for Generating 3.5-<inline-formula><tex-math notation="LaTeX">$\mu$</tex-math> </inline-formula>m Nanosecond Pulses From Monolithic Fiber Lasers
We propose a novel laser configuration that can output 3.5-<inline-formula><tex-math notation="LaTeX"> $\mu$</tex-math></inline-formula>m nanosecond laser pulses based on a simple and monolithic fiber structure. Cascade-gain-switching (CGS) converts the wavelength o...
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IEEE
2018-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/8470087/ |
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| author | Jianlong Yang Haizhe Zhong Shuaiyi Zhang Yulong Tang Dianyuan Fan |
| author_facet | Jianlong Yang Haizhe Zhong Shuaiyi Zhang Yulong Tang Dianyuan Fan |
| author_sort | Jianlong Yang |
| collection | DOAJ |
| description | We propose a novel laser configuration that can output 3.5-<inline-formula><tex-math notation="LaTeX"> $\mu$</tex-math></inline-formula>m nanosecond laser pulses based on a simple and monolithic fiber structure. Cascade-gain-switching (CGS) converts the wavelength of nanosecond pulses from 1.55 to 3.5 <inline-formula> <tex-math notation="LaTeX">$\mu$</tex-math></inline-formula>m by two successive gain-switching processes. CGS eliminates the requirement of using bulky free-space modulators for Q-switching. With a well-established theoretical model, we investigated the feasibility of this novel configuration and thoroughly explored its characteristics. In single-shot regime, the pulse width of the 1.55-<inline-formula><tex-math notation="LaTeX">$\mu$</tex-math> </inline-formula>m pump has major impact on the temporal shape of the intermediate 1.97-<inline-formula> <tex-math notation="LaTeX">$\mu$</tex-math></inline-formula>m pulse while has neglected influence on the generated 3.5- <inline-formula><tex-math notation="LaTeX">$\mu$</tex-math></inline-formula>m pulse. On the other hand, increasing the continuous-wave (CW) pump power can significantly improve the output peak power and shorten the pulse when the pump power is less than <inline-formula><tex-math notation="LaTeX">$\sim 4$</tex-math></inline-formula> W. In the repetitive-pulse regime, we found the maximum repetition rate is positively correlated the CW pump power. With a typical CW pump power of 5 W, the 3.5-<inline-formula><tex-math notation="LaTeX">$\mu$</tex-math></inline-formula>m pulse train can be stably outputted when the repetition rate is <inline-formula><tex-math notation="LaTeX">$<=100$ </tex-math></inline-formula> kHz. |
| format | Article |
| id | doaj-art-91473f5f63fb4f8ca2d61e29fd7bf9a8 |
| institution | Matheson Library |
| issn | 1943-0655 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-91473f5f63fb4f8ca2d61e29fd7bf9a82025-07-01T23:40:08ZengIEEEIEEE Photonics Journal1943-06552018-01-0110511210.1109/JPHOT.2018.28711698470087Cascade-Gain-Switching for Generating 3.5-<inline-formula><tex-math notation="LaTeX">$\mu$</tex-math> </inline-formula>m Nanosecond Pulses From Monolithic Fiber LasersJianlong Yang0https://orcid.org/0000-0001-7450-1260Haizhe Zhong1https://orcid.org/0000-0001-7883-8266Shuaiyi Zhang2https://orcid.org/0000-0002-5196-450XYulong Tang3https://orcid.org/0000-0001-7388-2516Dianyuan Fan4Engineering Technology Research Center for 2D Material Information Function Devices and Systems of Guangdong Province, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, ChinaEngineering Technology Research Center for 2D Material Information Function Devices and Systems of Guangdong Province, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, ChinaSchool of Mathematics and Physics, Qingdao University of Science & Technology, Qingdao, ChinaKey Laboratory for Laser Plasma (Ministry of Education), School of Physics and Astronomy, Collaborative Innovation Center of IFSA, Shanghai Jiao Tong University, Shanghai, ChinaEngineering Technology Research Center for 2D Material Information Function Devices and Systems of Guangdong Province, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, ChinaWe propose a novel laser configuration that can output 3.5-<inline-formula><tex-math notation="LaTeX"> $\mu$</tex-math></inline-formula>m nanosecond laser pulses based on a simple and monolithic fiber structure. Cascade-gain-switching (CGS) converts the wavelength of nanosecond pulses from 1.55 to 3.5 <inline-formula> <tex-math notation="LaTeX">$\mu$</tex-math></inline-formula>m by two successive gain-switching processes. CGS eliminates the requirement of using bulky free-space modulators for Q-switching. With a well-established theoretical model, we investigated the feasibility of this novel configuration and thoroughly explored its characteristics. In single-shot regime, the pulse width of the 1.55-<inline-formula><tex-math notation="LaTeX">$\mu$</tex-math> </inline-formula>m pump has major impact on the temporal shape of the intermediate 1.97-<inline-formula> <tex-math notation="LaTeX">$\mu$</tex-math></inline-formula>m pulse while has neglected influence on the generated 3.5- <inline-formula><tex-math notation="LaTeX">$\mu$</tex-math></inline-formula>m pulse. On the other hand, increasing the continuous-wave (CW) pump power can significantly improve the output peak power and shorten the pulse when the pump power is less than <inline-formula><tex-math notation="LaTeX">$\sim 4$</tex-math></inline-formula> W. In the repetitive-pulse regime, we found the maximum repetition rate is positively correlated the CW pump power. With a typical CW pump power of 5 W, the 3.5-<inline-formula><tex-math notation="LaTeX">$\mu$</tex-math></inline-formula>m pulse train can be stably outputted when the repetition rate is <inline-formula><tex-math notation="LaTeX">$<=100$ </tex-math></inline-formula> kHz.https://ieeexplore.ieee.org/document/8470087/Mid-infraredpulsed lasersfiber lasers. |
| spellingShingle | Jianlong Yang Haizhe Zhong Shuaiyi Zhang Yulong Tang Dianyuan Fan Cascade-Gain-Switching for Generating 3.5-<inline-formula><tex-math notation="LaTeX">$\mu$</tex-math> </inline-formula>m Nanosecond Pulses From Monolithic Fiber Lasers IEEE Photonics Journal Mid-infrared pulsed lasers fiber lasers. |
| title | Cascade-Gain-Switching for Generating 3.5-<inline-formula><tex-math notation="LaTeX">$\mu$</tex-math> </inline-formula>m Nanosecond Pulses From Monolithic Fiber Lasers |
| title_full | Cascade-Gain-Switching for Generating 3.5-<inline-formula><tex-math notation="LaTeX">$\mu$</tex-math> </inline-formula>m Nanosecond Pulses From Monolithic Fiber Lasers |
| title_fullStr | Cascade-Gain-Switching for Generating 3.5-<inline-formula><tex-math notation="LaTeX">$\mu$</tex-math> </inline-formula>m Nanosecond Pulses From Monolithic Fiber Lasers |
| title_full_unstemmed | Cascade-Gain-Switching for Generating 3.5-<inline-formula><tex-math notation="LaTeX">$\mu$</tex-math> </inline-formula>m Nanosecond Pulses From Monolithic Fiber Lasers |
| title_short | Cascade-Gain-Switching for Generating 3.5-<inline-formula><tex-math notation="LaTeX">$\mu$</tex-math> </inline-formula>m Nanosecond Pulses From Monolithic Fiber Lasers |
| title_sort | cascade gain switching for generating 3 5 inline formula tex math notation latex mu tex math inline formula m nanosecond pulses from monolithic fiber lasers |
| topic | Mid-infrared pulsed lasers fiber lasers. |
| url | https://ieeexplore.ieee.org/document/8470087/ |
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