Frequency doubling of graded-index fiber Raman lasers with multimode diode pumping

In the past few decades, the multifunctional optical crystals for all-solid-state Raman lasers have been widely studied by many scholars due to their compactness, convenience and excellent performance. In this review, we briefly show two kinds of multifunctional Raman crystals: self-Raman (laser and Raman effects) crystals and self-frequency-doubled Raman (frequency-doubling and Raman effects) crystals. We firstly introduce the properties of the self-Raman laser crystals, including vanadate, tungstate, molybdate and silicate doped with rare earth ions, as well as self-frequency-doubled Raman crystals, including KTiOAsO4 (KTA) and BaTeMo2O9 (BTM). Additionally, the domestic and international progress in research on multifunctional Raman crystals is summarized in the continuous wave, passively Q-switched, actively Q-switched and mode-locked regimes. Finally, we present the bottleneck in multifunctional Raman crystals and the outlook for future development. Through this review, we contribute to a general understanding of multifunctional Raman crystals.

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Mode decomposition of output beams in LD-pumped graded-index fiber Raman lasers

10.1117/12.2601512 ◽

2021 ◽

Author(s):

Denis S. Kharenko ◽

Mikhail D. Gervaziev ◽

Alexey Kuznetsov ◽

Stefan Wabnitz ◽

Evgeniy V. Podivilov ◽

...

Keyword(s):

Graded Index ◽

Mode Decomposition ◽

Raman Lasers

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MODELING OF THE BEAM CLEANING EFFECT AND OPTIMIZATION OF THE RAMAN FIBER LASER BASED ON GRADED-INDEX FIBER WITH DIRECT DIODE PUMPING

Applied photonics ◽

10.15593/2411-4367/2015.1.03 ◽

2015 ◽

pp. 31-43

Author(s):

Е Злобина ◽

Е Донцова ◽

С Каблуков ◽

С Бабин

Keyword(s):

Fiber Laser ◽

Diode Pumping ◽

Raman Fiber Laser ◽

Graded Index

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456-nm deep-blue laser generation by intracavity frequency doubling of Nd:GdVO4 under 879-nm diode pumping

Laser Physics ◽

10.1134/s1054660x09010022 ◽

2009 ◽

Vol 19 (1) ◽

pp. 111-114 ◽

Cited By ~ 101

Author(s):

J. Gao ◽

X. Yu ◽

X. D. Li ◽

F. Chen ◽

K. Zhang ◽

...

Keyword(s):

Frequency Doubling ◽

Blue Laser ◽

Laser Generation ◽

Diode Pumping ◽

Intracavity Frequency Doubling ◽

Intracavity Frequency ◽

Deep Blue

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Frequency doubling of multimode diode-pumped GRIN-fiber Raman lasers

Optics Express ◽

10.1364/oe.27.034760 ◽

2019 ◽

Vol 27 (24) ◽

pp. 34760 ◽

Cited By ~ 1

Author(s):

A. G. Kuznetsov ◽

E. A. Evmenova ◽

E. I. Dontsova ◽

S. I. Kablukov ◽

S. A. Babin

Keyword(s):

Frequency Doubling ◽

Raman Lasers ◽

Diode Pumped

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All-solid-state cw frequency-doubling Nd:YLiF_4/LBO blue laser with 433 W output power at 454 nm under in-band diode pumping at 880 nm

Applied Optics ◽

10.1364/ao.49.004096 ◽

2010 ◽

Vol 49 (21) ◽

pp. 4096 ◽

Cited By ~ 18

Author(s):

Yanfei Lü ◽

Xihe Zhang ◽

Weibo Cheng ◽

Jing Xia

Keyword(s):

Solid State ◽

Output Power ◽

Frequency Doubling ◽

Blue Laser ◽

Diode Pumping

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High-brightness all-fiber Raman lasers directly pumped by multimode laser diodes

High Power Laser Science and Engineering ◽

10.1017/hpl.2018.76 ◽

2019 ◽

Vol 7 ◽

Cited By ~ 2

Author(s):

S. A. Babin

Keyword(s):

Rare Earth ◽

High Power ◽

Fiber Lasers ◽

Mode Selection ◽

Laser Diodes ◽

Multimode Laser ◽

High Brightness ◽

Graded Index ◽

Raman Lasers ◽

Rare Earth Doped

High-brightness fiber laser sources usually utilize active rare-earth-doped fibers cladding-pumped by multimode laser diodes (LDs), but they operate in limited wavelength ranges. Singlemode-passive-fiber based Raman lasers are able to operate at almost any wavelength being pumped by high-power fiber lasers. One of the interesting possibilities is to directly pump graded-index (GRIN) multimode passive fibers by available high-power multimode LDs at 915–940 nm, thus achieving high-power Raman lasing in the wavelength range of 950–1000 nm, which is problematic for rare-earth-doped fiber lasers. Here we review the latest results on the development of all-fiber high-brightness LD-pumped sources based on GRIN fiber with in-fiber Bragg gratings (FBGs). The mode-selection properties of FBGs inscribed by fs pulses supported by the Raman clean-up effect result in efficient conversion of multimode pump into a high-quality output beam at 9xx nm. GRIN fibers with core diameters 62.5, 85 and $100~\unicode[STIX]{x03BC}\text{m}$ are compared. Further scaling capabilities and potential applications of such sources are discussed.

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