Mid-infrared gas filled photonic crystal fiber laser based on population inversion

Jones, Andrew M.; Nampoothiri, A. V. V.; Ratanavis, Amarin; Fiedler, Tobias; Wheeler, Natalie V.; Couny, F.; Kadel, Rajesh; Benabid, Fetah; Washburn, Brian R.; Corwin, Kristan L.; Rudolph, Wolfgang

doi:10.1364/oe.19.002309

Cited by 98 publications

(54 citation statements)

References 28 publications

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“…At total C 2 H 2 pressures as high as 7 Torr, lasing from collisionally populated rotational levels did not occur. 51 Given the short duration of the excitation and output pulses, the absence of lasing from collisionally populated levels is consistent with the RET rate constants given in Tables II and IV. For future development of the laser, the rate constants obtained in the present study should facilitate the computational design of systems that employ long-pulse or continuous wave excitation.…”

Section: Discussionsupporting

confidence: 78%

“…50,51 On pulsed laser excitation of the (1,0,1,0 0 ,0 0 ) R(7) line, Nampoothiri et al 50 observed lasing on the (1,0,1,0 0 ,0 0 ) → (0,0,1,0 0 ,0 0 ) R(7) and P(9) lines. At total C 2 H 2 pressures as high as 7 Torr, lasing from collisionally populated rotational levels did not occur.…”

Section: Discussionmentioning

confidence: 99%

“…Proof-of-principle experiments have been reported for acetylene in a conventional lowpressure cell 50 or a hollow-core photonic crystal fiber. 51 Optical pumping near 1.52 μm was used, which excites two quanta of the C-H stretch vibration. Lasing on the C-H stretch transition near 3 μm was observed.…”

Section: Introductionmentioning

confidence: 99%

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Rotational and vibrational energy transfer in vibrationally excited acetylene at energies near 6560 cm−1

Han

Freel

2011

The Journal of Chemical Physics

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Collisional energy transfer kinetics of vibrationally excited acetylene has been examined for states with internal energies near 6560 cm(-1). Total population removal rate constants were determined for selected rotational levels of the (1,0,1,0(0),0(0)) and (0,1,1,2(0),0(0)) states. Values in the range of (10-18) × 10(-10) cm(3) s(-1) were obtained. Measurements of state-to-state rotational energy transfer rate constants were also carried out for these states. The rotational energy transfer kinetics was found to be consistent with simple energy gap models for the transfer probabilities. Vibrational transfer out of the (0,1,1,2(0),0(0)) state accounted for no more than 16% of the total removal process. Transfer from (1,0,1,0(0),0(0)) to the u-symmetry (0,2,0,3(1),1(-1)), (0,1,1,2(0),0(0)), and (1,1,0,1(1),1(-1)) states was observed. Applying the principle of detailed balance to these data indicated that vibrational transfer to (1,0,1,0(0),0(0)) accounted for ~0.1% of the population loss from (0,2,0,3(1),1(-1)) or (0,1,1,2(0),0(0)), and 3% of the loss from (1,1,0,1(1),1(-1)). Relative rotational transfer probabilities were obtained for transfer to the g-symmetry (1,1,0,2(0),0(0))∕(0,0,2,0(0),0(0)) dyad. These results are related to recent studies of optically pumped acetylene lasers.

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Section: Discussionsupporting

confidence: 78%

Section: Discussionmentioning

confidence: 99%

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Rotational and vibrational energy transfer in vibrationally excited acetylene at energies near 6560 cm−1

Han

Freel

2011

The Journal of Chemical Physics

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“…If atomic vapor cells could be integrated with optical fibers or into silicon or silicon nitride photonic circuits, the complexity and functionality of chip-scale atomic devices could be increased considerably. Thermal atomic vapors can be loaded around tapered fibers 251 or into hollow-core optical fibers 110,[252][253][254][255][256][257][258] or hollow waveguides on a chip. 111,259 This allows for long interaction lengths, while maintaining strong transverse confinement, which can be useful for low-power non-linear optics.…”

Section: A Integration Of Atoms and Photonicsmentioning

confidence: 99%

Chip-scale atomic devices

Kitching

2018

Applied Physics Reviews

423

175

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“…The hollow-core optical fibre gas laser (HOFGLAS) -proposed and demonstrated by Jones/Nampoothiri [30,31] -combines the attractive properties of compactness, long interaction length and low lasing threshold of fibre laser and potential for high power and narrow line-width of gas laser. The lasing medium is optically pumped gas molecules filled in hollow-core (HC) photonic crystal fibre.…”

Section: Hollow-core Optical Fibre Gas Lasermentioning

confidence: 99%

Gas Lasers

Dixit¹

2014

Springer Proceedings in Physics

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The field of gas lasers, started with the invention of He-Ne laser in 1961, has witnessed tremendous growth in terms of technology development, research into gaseous gain medium, resonator physics and application in widely diverse arenas. This was possible due to high versatility of gas lasers in terms of operating wavelengths, power, beam quality and mode of operation. In recent years, there is a definite trend to replace the gas lasers, wherever possible, by more efficient and compact solid-state lasers. However, for many industrial, medical and military applications, the gas lasers still rule the roost due to their high-power capabilities with good beam quality at specific wavelengths. This chapter presents a short review covering the operating principle, important technical details and application potential of all the important gas lasers such as He-Ne, CO 2 , argon ion, copper vapour, excimer and chemical lasers. These neutral atoms, ions and molecule gas lasers are discussed as per applicable electrical, chemical and optical excitation schemes. The optically pumped gas lasers, recently experiencing resurgence, are discussed in the context of far infrared THz molecular lasers, diode-pumped alkali lasers and optically pumped gas-filled hollow-core fibre lasers.

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Mid-infrared gas filled photonic crystal fiber laser based on population inversion

Cited by 98 publications

References 28 publications

Rotational and vibrational energy transfer in vibrationally excited acetylene at energies near 6560 cm−1

Rotational and vibrational energy transfer in vibrationally excited acetylene at energies near 6560 cm−1

Chip-scale atomic devices

Gas Lasers

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