1.2 kW clad pumped Raman all-passive-fiber laser with brightness enhancement

Yaakov Glick; Yariv Shamir; Matitya Aviel; Yoav Sintov; Sharone Goldring; Noam Shafir; Shaul Pearl

doi:10.1364/OL.43.004755

1.2 kW clad pumped Raman all-passive-fiber laser with brightness enhancement

Yaakov Glick, Yariv Shamir, Matitya Aviel, Yoav Sintov, Sharone Goldring, Noam Shafir, Shaul Pearl

Research output: Contribution to journal › Article › peer-review

47 Scopus citations

Abstract

An all-fiber clad pumped Raman fiber laser (FL) oscillator with a CW power of 1.2 kW and an efficiency of 85% is presented. To the best of our knowledge, this laser is the highest power and the highest efficiency Raman FL demonstrated in any configuration with brightness enhancement (BE). To the best of our knowledge, it is also the first greater than kilowatt FL of any kind that does not utilize rare-earth doping in the oscillator fiber (all passive fiber). The beam quality (BQ) of the Raman laser was M² 2.75 at 1 kW, and the pump-Stokes BE factor was approximately 7. The laser consists of a specially designed triple-clad fiber which confines the low BQ pump power into the multi-mode inner clad, while generating the Raman signal in the large-mode-area core. The second Stokes is inhibited by selecting the appropriate inner clad-to-core area ratio and by the oscillator's selective fiber Bragg grating reflectors.

Original language	English
Pages (from-to)	4755-4758
Number of pages	4
Journal	Optics Letters
Volume	43
Issue number	19
DOIs	https://doi.org/10.1364/OL.43.004755
State	Published - 1 Oct 2018
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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title = "1.2 kW clad pumped Raman all-passive-fiber laser with brightness enhancement",

abstract = "An all-fiber clad pumped Raman fiber laser (FL) oscillator with a CW power of 1.2 kW and an efficiency of 85% is presented. To the best of our knowledge, this laser is the highest power and the highest efficiency Raman FL demonstrated in any configuration with brightness enhancement (BE). To the best of our knowledge, it is also the first greater than kilowatt FL of any kind that does not utilize rare-earth doping in the oscillator fiber (all passive fiber). The beam quality (BQ) of the Raman laser was M2 2.75 at 1 kW, and the pump-Stokes BE factor was approximately 7. The laser consists of a specially designed triple-clad fiber which confines the low BQ pump power into the multi-mode inner clad, while generating the Raman signal in the large-mode-area core. The second Stokes is inhibited by selecting the appropriate inner clad-to-core area ratio and by the oscillator's selective fiber Bragg grating reflectors.",

author = "Yaakov Glick and Yariv Shamir and Matitya Aviel and Yoav Sintov and Sharone Goldring and Noam Shafir and Shaul Pearl",

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T1 - 1.2 kW clad pumped Raman all-passive-fiber laser with brightness enhancement

AU - Glick, Yaakov

AU - Shamir, Yariv

AU - Aviel, Matitya

AU - Sintov, Yoav

AU - Goldring, Sharone

AU - Shafir, Noam

AU - Pearl, Shaul

PY - 2018/10/1

Y1 - 2018/10/1

N2 - An all-fiber clad pumped Raman fiber laser (FL) oscillator with a CW power of 1.2 kW and an efficiency of 85% is presented. To the best of our knowledge, this laser is the highest power and the highest efficiency Raman FL demonstrated in any configuration with brightness enhancement (BE). To the best of our knowledge, it is also the first greater than kilowatt FL of any kind that does not utilize rare-earth doping in the oscillator fiber (all passive fiber). The beam quality (BQ) of the Raman laser was M2 2.75 at 1 kW, and the pump-Stokes BE factor was approximately 7. The laser consists of a specially designed triple-clad fiber which confines the low BQ pump power into the multi-mode inner clad, while generating the Raman signal in the large-mode-area core. The second Stokes is inhibited by selecting the appropriate inner clad-to-core area ratio and by the oscillator's selective fiber Bragg grating reflectors.

AB - An all-fiber clad pumped Raman fiber laser (FL) oscillator with a CW power of 1.2 kW and an efficiency of 85% is presented. To the best of our knowledge, this laser is the highest power and the highest efficiency Raman FL demonstrated in any configuration with brightness enhancement (BE). To the best of our knowledge, it is also the first greater than kilowatt FL of any kind that does not utilize rare-earth doping in the oscillator fiber (all passive fiber). The beam quality (BQ) of the Raman laser was M2 2.75 at 1 kW, and the pump-Stokes BE factor was approximately 7. The laser consists of a specially designed triple-clad fiber which confines the low BQ pump power into the multi-mode inner clad, while generating the Raman signal in the large-mode-area core. The second Stokes is inhibited by selecting the appropriate inner clad-to-core area ratio and by the oscillator's selective fiber Bragg grating reflectors.

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EP - 4758

JO - Optics Letters

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ER -

1.2 kW clad pumped Raman all-passive-fiber laser with brightness enhancement

Abstract

ASJC Scopus subject areas

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