Fiber amplifier based UV laser source

Leonardo, Mathieu; Byer, Mark W.; Keaton, Gregory L.; Richard, Derek J.; Adams, F.; Nightingale, J. L.; Arbore, M. A.; Guzsella, Susi; Smoliar, Laura A.

doi:10.1117/12.806820

Cited by 7 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The seed diode and fiber amplifiers are the infra-red part of the standard Mobius G1+ laser system. 7 To create a light source with wavelength in the vicinity of 600 nm, we built a dual-wavelength Raman laser based not on the first and second Raman shifts from the fundamental wavelength, but on the second and third. To achieve this, the amplified 1060 nm output is coupled into a 50 m length of single-mode, polarization maintaining, passive fiber.…”

Section: Description Of the Systemmentioning

confidence: 99%

Multi-color laser source for STED microscopy

Keaton¹,

Byer²,

Leonardo³

et al. 2011

SPIE Proceedings

Self Cite

View full text Add to dashboard Cite

We report on a pulsed laser source whose wavelength can be switched between 585 nm, 600 nm, and 616 nm. The pulses are approximately 1 nsec long, the repetition rate is 20 MHz, and the pulse energies are 25 to 50 nJ. The laser source uses a laser diode seed and a series of Yb-doped fiber amplifiers to generate pulsed light at 1060 nm. The 1060 nm light is Raman-shifted in ordinary undoped fiber, then converted to the visible using MgO-doped periodically poled lithium niobate (PPLN). In general, the spectrum of such Raman-shifted light is too broad to be efficiently frequency-converted by PPLN. To overcome this problem, we have used narrow band fiber Bragg gratings to create a dual-wavelength fiber Raman laser. The 1060 nm light is first launched into a length of passive fiber, where the first Raman wavelength is generated. This (broad spectrum) light then synchronously pumps the fiber Raman laser, which supports the second and third Raman wavelengths simultaneously. Either of these wavelengths can be frequency doubled, or the two can be frequency summed, to create any of three visible colors. The PPLN crystal accordingly has three poling regions, and the color produced can be selected by indexing the crystal. The final output is suitable for high speed STED microscopy.

show abstract

Section: Description Of the Systemmentioning

confidence: 99%

Multi-color laser source for STED microscopy

Keaton¹,

Byer²,

Leonardo³

et al. 2011

SPIE Proceedings

Self Cite

View full text Add to dashboard Cite

show abstract

“…It is easy to provide a wide tunable range of pulse duration and pulse repetition frequency (PRF), although it should be amplified by multi-stage fiber amplifiers due to its weak average power of only some tens of microwatt [10]. In 2009, Leonardo reported a high-power UV laser based on the fiber MOPA structure [11]. A maximum 30 W of average UV power was achieved at 400 kHz with a ∼2 ns pulse duration.…”

Section: Introductionmentioning

confidence: 99%

High-power 355 nm ultraviolet lasers operating at ultrahigh repetition rate

Chen¹,

Liu²,

Yan³

et al. 2012

Laser Phys. Lett.

View full text Add to dashboard Cite

In this letter, we demonstrate a novel 355 nm ultraviolet (UV) laser operating at ultrahigh repetition rate from 300 kHz to 1 MHz. The hybrid fiber-MOPA-bulk amplifiers based IR source exhibits a high average power of 105 W with near-diffraction-limited beam quality, narrow linewidth and high polarization extinction ratio. Two-cascaded LBO crystals are employed for high efficiency frequency tripling, and a maximum 43.7 W of average UV power is achieved at 400 kHz, corresponding to a conversion efficiency as high as 41.6%. The pulse duration of the UV pulse can be tuned from 5 to 10 ns with good pulse peak stability (better than 2.2% (RMS)).

show abstract

“…1 (a). The pump laser for SRS was based on a pulsed master-oscillator, fiber power-amplifier architecture and internally frequency doubled to produce the 530 nm output with 10 µJ pulses available (at maximum power) at 1 MHz, 2 ns in length and with < 0.5 nm spectral bandwidth (G1 + Laser System, Mobius Photonics, Santa Clara, USA) [14,15]. The output laser power could be controlled electronically, but to increase power attenuation below the minimum power level and confer further flexibility to the setup a half wave plate followed by a polarizing beam splitter was included directly after the output.…”

Section: Introductionmentioning

confidence: 99%

STED microscopy with a MHz pulsed stimulated-Raman-scattering source

Rankin¹,

Hell²

2009

Opt. Express

View full text Add to dashboard Cite

We perform stimulated emission depletion (STED) microscopy with a novel light source consisting of a fiber-amplified, frequency doubled laser operating with a 1 MHz repetition rate and a 530 nm output coupled into a standard single mode fiber to produce a tunable spectrum of discrete peaks via stimulated Raman scattering (SRS). Using peaks at 585, 600, and 616 nm as STED light we perform STED microscopy with resolution down to 20-30 nm. The nanosecond pulsed light source should prove valuable for all forms of microscopy requiring both brilliance and multiple wavelengths in the visible range.

show abstract

Fiber amplifier based UV laser source

Cited by 7 publications

References 0 publications

Multi-color laser source for STED microscopy

Multi-color laser source for STED microscopy

High-power 355 nm ultraviolet lasers operating at ultrahigh repetition rate

STED microscopy with a MHz pulsed stimulated-Raman-scattering source

Contact Info

Product

Resources

About