Volume holographic grating-based continuously tunable optical filter

Havermeyer, Frank; Liu, Wenhai; Moser, Christophe; Steckman, Gregory J.

doi:10.1117/1.1773775

Cited by 36 publications

(11 citation statements)

References 15 publications

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“…At short operation wavelengths, the insertion loss of VBG increases due to the sharp angle selectivity at large incident angles and the angle deviation of a finite aperture Gaussian beam. The angle selectivity [17] of a reflective VBG is described as Δθ = λ B /(2n sin θL), which decreases with increasing angle of incident θ, where n is the refractive index of the material, L is the effective thickness of the VBG. When Δθ is comparable with or smaller than the angular deviation of incident Gaussian beam, part of the Gaussian beam will not be Bragg matched at the same time, resulting in degradation in VBG's reflectivity.…”

Section: Experiments and Resultsmentioning

confidence: 99%

High power widely tunable Tm:fiber laser with spectral linewidth of 10 pm

et al. 2010

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We report on high-power, efficient operation of a widely tunable, cladding pumped Tm:fiber laser using a volume Bragg grating (VBG) for wavelength selection and spectral narrowing. The operating wavelength was tunable from 1943 to 1998 nm, with > 53 W output power over a tuning range of 50 nm from 1948 nm to 1998 nm and a spectral linewidth of 10 pm. Over 58.1 W of diffraction limited (M 2 ∼ 1.5) CW output power was generated for 143.6 W of launched pump power at 792 nm, corresponding to a slope efficiency with respect to launched pump power of 45%.Intensity, a.u. 0.5 1.0

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Section: Experiments and Resultsmentioning

confidence: 99%

High power widely tunable Tm:fiber laser with spectral linewidth of 10 pm

et al. 2010

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“…This behavior of the TF has also been applied for the implementation of tunable TFs [11][12]. With this concept in mind, this paper proposes to use only one TF to multiplex or demultiplex N wavelength optical beams via an angle-multiplexing concept [13].…”

Section: Introductionmentioning

confidence: 99%

Thin-film filter-based wavelength division multiplexers/demultiplexers in an angle-multiplexed architecture

Sumriddetchkajorn

Chaitavon

2006

SPIE Proceedings

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This paper shows how an angle multiplexing concept permits one thin-film filter (TF) to multiplex or demultiplex N wavelength optical beams, leading to cost-effective wavelength division multiplexers/demultiplexers (MUXs/DeMUXs). Our first TF-based wavelength MUX/DeMUX structure is arranged in a reflective design in which only the λ N wavelength optical beam cannot be recombined into the main channel. Fully multiplexing and demultiplexing operations can be accomplished by using our transmissive TF-based wavelength MUX/DeMUX architecture. Experimental proof of concept for our reflective TF-based wavelength MUX/DeMUX structure using one TF, a triple fiber-optic collimator, and an optical circulator separates two wavelength optical beams with their channel spacing of 0.8 nm from the main channel. In this case, measured optical losses of 0.67 dB, 1.66 dB, and 2.59 dB are obtained for the first, the second, and the remaining wavelength optical beams, respectively. Optical crosstalk and polarization dependent loss of < -18 dB and < 0.08 dB are also investigated, respectively.

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“…In this way we achieve a narrow spectral bandwidth in combination with a wide tuning range -the widest so far in this material. By a novel design with an intracavity retroreflector arrangement incorporating the volume Bragg grating [7], we obtain simple tuning of the laser by adjusting only one degree of freedom. In comparison with the other tuning methods discussed above, volume Bragg gratings in a single element provide a better wavelength selectivity than prisms and, unlike the multiple peaks in etalons, give a minimum cavity loss at a single wavelength only.…”

Section: Introductionmentioning

confidence: 99%

Widely tunable Yb:KYW laser with a volume Bragg grating

Jacobsson¹,

Hellström²,

Pasiskevicius³

et al. 2007

Opt. Express

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We demonstrate a narrowband, continuously tunable Yb:KYW laser locked by a volume Bragg grating at oblique incidence in a retroreflector configuration. The tuning range was 997 nm to 1050 nm (15 THz) with bandwidth < 0.1 nm and a maximum output power of 4.7 W. In a high-quality beam with M(2) < 1.3, the maximum output power was 1.7 W. We also demonstrate 3 W output power at 1064 nm from the same Yb:KYW laser with the grating at normal incidence.

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Volume holographic grating-based continuously tunable optical filter

Cited by 36 publications

References 15 publications

High power widely tunable Tm:fiber laser with spectral linewidth of 10 pm

High power widely tunable Tm:fiber laser with spectral linewidth of 10 pm

Thin-film filter-based wavelength division multiplexers/demultiplexers in an angle-multiplexed architecture

Widely tunable Yb:KYW laser with a volume Bragg grating

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