Abstract

We model and demonstrate resonantly enhanced third harmonic generation in microfiber loop resonators, in which the large pump field intensity is exploited to improve the conversion on resonance. Silica microfibers were fabricated with waist diameters near 0.76 μm to ensure intermodal phase matching. When pumped with λ=1.55μm 4 ns pulses at 100 W peak power, the conversion efficiency is 3×106 over an estimated interaction length of 1mm near the waist. The resonator is then formed by manually translating and twisting the microfiber ends to produce loop diameters down to 6 mm and resonant enhancements up to 7.7 dB for the same pump parameters.

© 2012 Optical Society of America

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2012 (2)

2011 (1)

2010 (2)

2009 (1)

2008 (1)

G. Vienne, P. Grelu, X. Pan, Y. Li, and L. Tong, J. Opt. Pure Appl. Opt. 10, 025303 (2008).
[CrossRef]

2007 (2)

T. Carmon and K. J. Vahala, Nat. Phys. 3, 430 (2007).
[CrossRef]

V. Grubsky and J. Feinberg, Opt. Commun. 274, 447 (2007).
[CrossRef]

2006 (1)

M. Sumetsky, Y. Dulashko, J. Fini, A. Hale, and D. DiGiovanni, J. Lightwave Tech. 24, 242 (2006).
[CrossRef]

2005 (1)

2003 (1)

D. Akimov, A. Ivanov, A. Naumov, O. Kolevatova, M. Alfimov, T. Birks, W. Wadsworth, P. Russell, A. Podshivalov, and A. Zheltikov, Appl. Phys. B: Lasers Opt. 76, 515 (2003).
[CrossRef]

Afshar, S.

Akimov, D.

D. Akimov, A. Ivanov, A. Naumov, O. Kolevatova, M. Alfimov, T. Birks, W. Wadsworth, P. Russell, A. Podshivalov, and A. Zheltikov, Appl. Phys. B: Lasers Opt. 76, 515 (2003).
[CrossRef]

Alfimov, M.

D. Akimov, A. Ivanov, A. Naumov, O. Kolevatova, M. Alfimov, T. Birks, W. Wadsworth, P. Russell, A. Podshivalov, and A. Zheltikov, Appl. Phys. B: Lasers Opt. 76, 515 (2003).
[CrossRef]

Alt, W.

Birks, T.

D. Akimov, A. Ivanov, A. Naumov, O. Kolevatova, M. Alfimov, T. Birks, W. Wadsworth, P. Russell, A. Podshivalov, and A. Zheltikov, Appl. Phys. B: Lasers Opt. 76, 515 (2003).
[CrossRef]

Brambilla, G.

Broderick, N. G. R.

Carmon, T.

T. Carmon and K. J. Vahala, Nat. Phys. 3, 430 (2007).
[CrossRef]

Codemard, C. A.

Coillet, A.

A. Coillet and P. Grelu, Opt. Commun. 285, 3493 (2012).
[CrossRef]

A. Coillet, G. Vienne, and P. Grelu, J. Opt. Soc. Am. B 27, 394 (2010).

Dan, C.

DiGiovanni, D.

M. Sumetsky, Y. Dulashko, J. Fini, A. Hale, and D. DiGiovanni, J. Lightwave Tech. 24, 242 (2006).
[CrossRef]

Ding, M.

Dulashko, Y.

M. Sumetsky, Y. Dulashko, J. Fini, A. Hale, and D. DiGiovanni, J. Lightwave Tech. 24, 242 (2006).
[CrossRef]

Feinberg, J.

V. Grubsky and J. Feinberg, Opt. Commun. 274, 447 (2007).
[CrossRef]

Fini, J.

M. Sumetsky, Y. Dulashko, J. Fini, A. Hale, and D. DiGiovanni, J. Lightwave Tech. 24, 242 (2006).
[CrossRef]

Foster, M. A.

Gaeta, A. L.

Grelu, P.

A. Coillet and P. Grelu, Opt. Commun. 285, 3493 (2012).
[CrossRef]

A. Coillet, G. Vienne, and P. Grelu, J. Opt. Soc. Am. B 27, 394 (2010).

G. Vienne, P. Grelu, X. Pan, Y. Li, and L. Tong, J. Opt. Pure Appl. Opt. 10, 025303 (2008).
[CrossRef]

Grubsky, V.

V. Grubsky and J. Feinberg, Opt. Commun. 274, 447 (2007).
[CrossRef]

V. Grubsky and A. Savchenko, Opt. Express 13, 6798 (2005).
[CrossRef]

Hale, A.

M. Sumetsky, Y. Dulashko, J. Fini, A. Hale, and D. DiGiovanni, J. Lightwave Tech. 24, 242 (2006).
[CrossRef]

Irsen, S.

Ivanov, A.

D. Akimov, A. Ivanov, A. Naumov, O. Kolevatova, M. Alfimov, T. Birks, W. Wadsworth, P. Russell, A. Podshivalov, and A. Zheltikov, Appl. Phys. B: Lasers Opt. 76, 515 (2003).
[CrossRef]

Jung, Y.

Karapetyan, K.

Kolevatova, O.

D. Akimov, A. Ivanov, A. Naumov, O. Kolevatova, M. Alfimov, T. Birks, W. Wadsworth, P. Russell, A. Podshivalov, and A. Zheltikov, Appl. Phys. B: Lasers Opt. 76, 515 (2003).
[CrossRef]

Lee, T.

Levy, J. S.

Li, Y.

G. Vienne, P. Grelu, X. Pan, Y. Li, and L. Tong, J. Opt. Pure Appl. Opt. 10, 025303 (2008).
[CrossRef]

Lipson, M.

Meschede, D.

Monro, T. M.

Naumov, A.

D. Akimov, A. Ivanov, A. Naumov, O. Kolevatova, M. Alfimov, T. Birks, W. Wadsworth, P. Russell, A. Podshivalov, and A. Zheltikov, Appl. Phys. B: Lasers Opt. 76, 515 (2003).
[CrossRef]

Pan, X.

G. Vienne, P. Grelu, X. Pan, Y. Li, and L. Tong, J. Opt. Pure Appl. Opt. 10, 025303 (2008).
[CrossRef]

Podshivalov, A.

D. Akimov, A. Ivanov, A. Naumov, O. Kolevatova, M. Alfimov, T. Birks, W. Wadsworth, P. Russell, A. Podshivalov, and A. Zheltikov, Appl. Phys. B: Lasers Opt. 76, 515 (2003).
[CrossRef]

Pritzkau, D.

Russell, P.

D. Akimov, A. Ivanov, A. Naumov, O. Kolevatova, M. Alfimov, T. Birks, W. Wadsworth, P. Russell, A. Podshivalov, and A. Zheltikov, Appl. Phys. B: Lasers Opt. 76, 515 (2003).
[CrossRef]

Savchenko, A.

Sumetsky, M.

M. Sumetsky, Y. Dulashko, J. Fini, A. Hale, and D. DiGiovanni, J. Lightwave Tech. 24, 242 (2006).
[CrossRef]

Tong, L.

G. Vienne, P. Grelu, X. Pan, Y. Li, and L. Tong, J. Opt. Pure Appl. Opt. 10, 025303 (2008).
[CrossRef]

Vahala, K. J.

T. Carmon and K. J. Vahala, Nat. Phys. 3, 430 (2007).
[CrossRef]

Vienne, G.

A. Coillet, G. Vienne, and P. Grelu, J. Opt. Soc. Am. B 27, 394 (2010).

G. Vienne, P. Grelu, X. Pan, Y. Li, and L. Tong, J. Opt. Pure Appl. Opt. 10, 025303 (2008).
[CrossRef]

Wadsworth, W.

D. Akimov, A. Ivanov, A. Naumov, O. Kolevatova, M. Alfimov, T. Birks, W. Wadsworth, P. Russell, A. Podshivalov, and A. Zheltikov, Appl. Phys. B: Lasers Opt. 76, 515 (2003).
[CrossRef]

Wiedemann, U.

Zheltikov, A.

D. Akimov, A. Ivanov, A. Naumov, O. Kolevatova, M. Alfimov, T. Birks, W. Wadsworth, P. Russell, A. Podshivalov, and A. Zheltikov, Appl. Phys. B: Lasers Opt. 76, 515 (2003).
[CrossRef]

Appl. Phys. B: Lasers Opt. (1)

D. Akimov, A. Ivanov, A. Naumov, O. Kolevatova, M. Alfimov, T. Birks, W. Wadsworth, P. Russell, A. Podshivalov, and A. Zheltikov, Appl. Phys. B: Lasers Opt. 76, 515 (2003).
[CrossRef]

J. Lightwave Tech. (1)

M. Sumetsky, Y. Dulashko, J. Fini, A. Hale, and D. DiGiovanni, J. Lightwave Tech. 24, 242 (2006).
[CrossRef]

J. Opt. Pure Appl. Opt. (1)

G. Vienne, P. Grelu, X. Pan, Y. Li, and L. Tong, J. Opt. Pure Appl. Opt. 10, 025303 (2008).
[CrossRef]

J. Opt. Soc. Am. B (1)

Nat. Phys. (1)

T. Carmon and K. J. Vahala, Nat. Phys. 3, 430 (2007).
[CrossRef]

Opt. Commun. (2)

A. Coillet and P. Grelu, Opt. Commun. 285, 3493 (2012).
[CrossRef]

V. Grubsky and J. Feinberg, Opt. Commun. 274, 447 (2007).
[CrossRef]

Opt. Express (5)

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Figures (6)

Fig. 1.
Fig. 1.

(a) Schematic of the microfiber loop resonator and (b) experimental setup.

Fig. 2.
Fig. 2.

(a) Simulated output pump power and (b) third harmonic power from a silica loop resonator using different pump detunings (solid curves). Dashed lines indicate the spectra for an equivalent linear loop, and dotted lines represent the straight microfiber. Parameters: P 0 = 100 W (20 dB), L 0 = 20 mm , L THG = 1 mm , L c = 50 μm , κ ω = 7.3 × 10 4 m 1 , κ 3 ω = 0 m 1 , α ω = α 3 ω = 5 m 1 , n eff = 1.081 , δ β = β 3 ω 3 β ω 1440 m 1 .

Fig. 3.
Fig. 3.

(a) Enhancement ζ versus proximity from critical coupling Δ K of the loop resonator for different values of loss α . The dot corresponds to the case given in Fig. 2. (b) Logarithmic plot of ζ against circulating power ratio P circ / P 0 . Other parameters same as Fig. 2.

Fig. 4.
Fig. 4.

(a) 1550 nm source spectrum (recorded through a 20 dB coupler). (b) Logarithmic plot of third harmonic against pump peak powers in the range P 0 = 0.1 1 kW . Dotted line provides a linear fit.

Fig. 5.
Fig. 5.

Loop resonator output spectrum, characterized using an ASE source.

Fig. 6.
Fig. 6.

Third harmonic signal spectrum for the straight microfiber and the loop resonator. For the latter, several spectra were recorded as the loop was tightened during fabrication to improve the coupling while keeping diameter at 6 mm (measured through a short pass filter with 5 dB loss at λ 0.5 μm ).

Equations (1)

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ζ [ 1 sin 2 ( κ ω L c ) ( 1 + sin ( κ ω L c ) e α ω L 0 ) 2 ] 3 .

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