High power ytterbium fiber lasers at extremely long wavelengths by photonic bandgap fiber technology

Shirakawa, Akira; Olausson, Christina B.; Maruyama, Hiroki; Ueda, Ken–ichi; Lyngsø, Jens K.; Broeng, Jes

doi:10.1016/j.yofte.2010.09.003

Cited by 26 publications

(9 citation statements)

References 60 publications

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“…Fiber‐based technologies for 589 nm laser generation have advanced in recent years. With Yb‐doped photonic bandgap fibers, an up to 24.6 W single‐frequency 1178 nm amplifier was reported and a maximum 14.5 W 589 nm laser has been generated by single‐pass frequency doubling through a PPMg:SLT crystal . With polarization maintaining (PM) Raman fiber amplifier (RFA), a 44 W 1178 nm laser has been reported and a 25 W 589 nm laser was generated by frequency doubling in an external resonant cavity .…”

Section: Introductionmentioning

confidence: 99%

Versatile Raman fiber laser for sodium laser guide star

Zhang

Jiang

Cui

et al. 2014

Laser & Photonics Reviews

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Robust high-power narrow-linewidth lasers at 589 nm are required for sodium laser guide star adaptive optics in astronomy. A high-power 589 nm laser based on Raman fiber amplifier is reported here, which works in both continuous-wave and pulsed formats. In the continuous-wave case, the laser produces more than 50 W output. In the pulsed case, the same laser produces square-shaped pulses with tunable repetition rate (500 Hz to 10 kHz) and duration (1 ms to 30 μs). The peak power is as high as 84 W and remains constant during the tuning. The laser also emits an adjustable sideband at 1.71 GHz away from the main laser frequency for better sodium excitation. The versatility of the laser offers much flexibility in laser guide star application.

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Section: Introductionmentioning

confidence: 99%

Versatile Raman fiber laser for sodium laser guide star

Zhang

Jiang

Cui

et al. 2014

Laser & Photonics Reviews

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“…The filter can be optimized for light guiding like the near infrared (NIR) wavelength region centered at 1.0 µm [32]. The proposed PBGF can be employed in fiber laser [33], [34], laser spectroscopy [35], optical communication [36], sensing [37] and high quality optical imaging [38]. Fig.…”

Section: Introductionmentioning

confidence: 99%

Design of Single-Band Bandpass Filter Using Photonic Bandgap Fiber by Suppressing Core Modes in Higher Order Bandgaps

et al. 2015

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We present two designs of all-solid photonic bandgap fiber for higher order bandgap suppression to realize a unique transmission window for optical filtering purpose. These two approaches are based on either applying a low refractive index core or a high refractive index background. This work describes direct calculations of different modes in high-index rods in the all-solid photonic bandgap fiber using the ARROW model for a double cladded step index fiber. The flat-top single-band bandpass filter obtained with potential center wavelength over UV, visible and IR region. We achieve the single-band bandpass filter with minimum pass band to rejection band ratio of 20 dB in core power. From the calculated performance, both analytical and simulation results are in good agreement with confinement loss calculation.

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“…In order to overcome the ASE and parasitic lasing, Yb-doped solid-core photonic bandgap fibers (PBGFs) have been developed. Photonic bandgap fiber can move the gain peak to the laser wavelength inside the bandgap by the combination of the Yb gain and bandgap loss profile by the effect of the photonic bandgap, and therefore has been developed to suppress ASE caused by the huge gain between 1030-1100 nm and parasitic lasing [8]. We have reported a 167 W Yb-PBGF amplifier [9], a 54 W Yb-PBGF oscillator [10] and a 24.6 W single frequency Yb-PBGF amplifier [11] at 1178 nm.…”

Section: Introductionmentioning

confidence: 99%

A 98 W 1178 nm Yb-doped solid-core photonic bandgap fiber oscillator

et al. 2013

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A high-power ytterbium-doped solid-core photonic bandgap fiber laser directly oscillating at 1178 nm is reported. The sharp-cut bandpass distributed filtering effect of photonic bandgap fiber can suppress amplified spontaneous emission (ASE) in the conventional high-gain spectral region. The oscillator is composed of a high reflection fiber Bragg grating spliced with a 39 m gain fiber and a Fresnel fiber end surface. A model based on rate equations is investigated numerically. A record output power of 98 W is achieved with a slope efficiency of 54%. The laser linewidth is 0.5 nm. The spectrum at 98 W indicates that ASE and parasitic lasing are suppressed effectively.

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High power ytterbium fiber lasers at extremely long wavelengths by photonic bandgap fiber technology

Cited by 26 publications

References 60 publications

Versatile Raman fiber laser for sodium laser guide star

Versatile Raman fiber laser for sodium laser guide star

Design of Single-Band Bandpass Filter Using Photonic Bandgap Fiber by Suppressing Core Modes in Higher Order Bandgaps

A 98 W 1178 nm Yb-doped solid-core photonic bandgap fiber oscillator

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