Abstract

We report an efficient 1.485 μm external cavity diamond Raman laser operating on the 2nd Stokes shift of a 1.064 μm Nd:YAG pump laser. 1.63 W pulsed at 5 kHz is produced with a quantum conversion efficiency of 71% and excellent beam quality. Numerical modelling confirms that optimal operation is achieved with low output coupling reflectivity.

© 2011 OSA

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  1. J. W. Kim, D. Y. Shen, J. K. Sahu, and W. A. Clarkson, “Fiber-Laser-Pumped Er:YAG lasers,” IEEE J. Sel. Top. Quant. 15(2), 361–371 (2009).
    [CrossRef]
  2. M. Eichhorn, “High-power resonantly diode-pumped CW Er3+:YAG laser,” Appl. Phys. B 93(4), 773–778 (2008).
    [CrossRef]
  3. P. G. Zverev, T. T. Basiev, and A. M. Prokhorov, “Stimulated Raman scattering of laser radiation in Raman crystals,” Opt. Mater. 11(4), 335–352 (1999).
    [CrossRef]
  4. V. A. Lisinetskii, A. S. Grabtchikov, I. A. Khodasevich, H. J. Eichler, and V. A. Orlovich, “Efficient high energy 1st, 2nd or 3rd Stokes Raman generation in IR region,” Opt. Commun. 272(2), 509–513 (2007).
    [CrossRef]
  5. T. T. Basiev, M. N. Basieva, A. V. Gavrilov, M. N. Ershkov, L. I. Ivleva, V. V. Osiko, S. N. Smetanin, and A. V. Fedin, “Efficient conversion of Nd: YAG laser radiation to the eye-safe spectral region by stimulated Raman scattering in BaWO4 crystal,” Quantum Electron. 40(8), 710–715 (2010).
    [CrossRef]
  6. R. P. Mildren and A. Sabella, “Highly efficient diamond Raman laser,” Opt. Lett. 34(18), 2811–2813 (2009).
    [CrossRef] [PubMed]
  7. A. Sabella, J. A. Piper, and R. P. Mildren, “1240 nm diamond Raman laser operating near the quantum limit,” Opt. Lett. 35(23), 3874–3876 (2010).
    [CrossRef] [PubMed]
  8. J. P. M. Feve, K. E. Shortoff, M. J. Bohn, and J. K. Brasseur, “High average power diamond Raman laser,” Opt. Express 19(2), 913–922 (2011).
    [CrossRef] [PubMed]
  9. S. Ding, X. Zhang, Q. Wang, P. Jia, C. Zhang, and B. Liu, “Numerical optimization of the extracavity Raman laser with barium nitrate crystal,” Opt. Commun. 267(2), 480–486 (2006).
    [CrossRef]
  10. Y. R. Shen and N. Bloembergen, “Theory of Stimulated Brillouin and Raman Scattering,” Phys. Rev. 137(6A), A1787–A1805 (1965).
    [CrossRef]
  11. A. M. Zaitsev, Optical Properties of Diamond (Springer-Verlag, Berlin, 2001), Chap. 4.
  12. J. T. Murray, W. L. Austin, and R. C. Powell, “Intracavity Raman conversion and Raman beam cleanup,” Opt. Mater. 11(4), 353–371 (1999).
    [CrossRef]
  13. L. R. Marshall and A. Kaz, “Eye-safe output from noncritically phase-matched parametric oscillators,” J. Opt. Soc. Am. B 10(9), 1730–1736 (1993).
    [CrossRef]
  14. H. M. Pask, S. Myers, J. A. Piper, J. Richards, and T. McKay, “High average power, all-solid-state external resonator Raman laser,” Opt. Lett. 28(6), 435–437 (2003).
    [CrossRef] [PubMed]
  15. V. A. Lisinetskii, T. Riesbeck, H. Rhee, H. J. Eichler, and V. A. Orlovich, “High average power generation in barium nitrate Raman laser,” Appl. Phys. B 99(1-2), 127–134 (2010).
    [CrossRef]
  16. N. Takei, S. Suzuki, and F. Kannari, “20-Hz operation of an eye-safe cascade Raman laser with a Ba(NO3)2 crystal,” Appl. Phys. B 74(6), 521–527 (2002).
    [CrossRef]
  17. T. T. Basiev, A. V. Gavrilov, V. V. Osiko, S. N. Smetanin, and A. V. Fedin, “High-average-power SRS conversion of radiation in a BaWO4 crystal,” Quantum Electron. 34(7), 649–651 (2004).
    [CrossRef]

2011 (1)

2010 (3)

A. Sabella, J. A. Piper, and R. P. Mildren, “1240 nm diamond Raman laser operating near the quantum limit,” Opt. Lett. 35(23), 3874–3876 (2010).
[CrossRef] [PubMed]

T. T. Basiev, M. N. Basieva, A. V. Gavrilov, M. N. Ershkov, L. I. Ivleva, V. V. Osiko, S. N. Smetanin, and A. V. Fedin, “Efficient conversion of Nd: YAG laser radiation to the eye-safe spectral region by stimulated Raman scattering in BaWO4 crystal,” Quantum Electron. 40(8), 710–715 (2010).
[CrossRef]

V. A. Lisinetskii, T. Riesbeck, H. Rhee, H. J. Eichler, and V. A. Orlovich, “High average power generation in barium nitrate Raman laser,” Appl. Phys. B 99(1-2), 127–134 (2010).
[CrossRef]

2009 (2)

R. P. Mildren and A. Sabella, “Highly efficient diamond Raman laser,” Opt. Lett. 34(18), 2811–2813 (2009).
[CrossRef] [PubMed]

J. W. Kim, D. Y. Shen, J. K. Sahu, and W. A. Clarkson, “Fiber-Laser-Pumped Er:YAG lasers,” IEEE J. Sel. Top. Quant. 15(2), 361–371 (2009).
[CrossRef]

2008 (1)

M. Eichhorn, “High-power resonantly diode-pumped CW Er3+:YAG laser,” Appl. Phys. B 93(4), 773–778 (2008).
[CrossRef]

2007 (1)

V. A. Lisinetskii, A. S. Grabtchikov, I. A. Khodasevich, H. J. Eichler, and V. A. Orlovich, “Efficient high energy 1st, 2nd or 3rd Stokes Raman generation in IR region,” Opt. Commun. 272(2), 509–513 (2007).
[CrossRef]

2006 (1)

S. Ding, X. Zhang, Q. Wang, P. Jia, C. Zhang, and B. Liu, “Numerical optimization of the extracavity Raman laser with barium nitrate crystal,” Opt. Commun. 267(2), 480–486 (2006).
[CrossRef]

2004 (1)

T. T. Basiev, A. V. Gavrilov, V. V. Osiko, S. N. Smetanin, and A. V. Fedin, “High-average-power SRS conversion of radiation in a BaWO4 crystal,” Quantum Electron. 34(7), 649–651 (2004).
[CrossRef]

2003 (1)

2002 (1)

N. Takei, S. Suzuki, and F. Kannari, “20-Hz operation of an eye-safe cascade Raman laser with a Ba(NO3)2 crystal,” Appl. Phys. B 74(6), 521–527 (2002).
[CrossRef]

1999 (2)

J. T. Murray, W. L. Austin, and R. C. Powell, “Intracavity Raman conversion and Raman beam cleanup,” Opt. Mater. 11(4), 353–371 (1999).
[CrossRef]

P. G. Zverev, T. T. Basiev, and A. M. Prokhorov, “Stimulated Raman scattering of laser radiation in Raman crystals,” Opt. Mater. 11(4), 335–352 (1999).
[CrossRef]

1993 (1)

1965 (1)

Y. R. Shen and N. Bloembergen, “Theory of Stimulated Brillouin and Raman Scattering,” Phys. Rev. 137(6A), A1787–A1805 (1965).
[CrossRef]

Austin, W. L.

J. T. Murray, W. L. Austin, and R. C. Powell, “Intracavity Raman conversion and Raman beam cleanup,” Opt. Mater. 11(4), 353–371 (1999).
[CrossRef]

Basiev, T. T.

T. T. Basiev, M. N. Basieva, A. V. Gavrilov, M. N. Ershkov, L. I. Ivleva, V. V. Osiko, S. N. Smetanin, and A. V. Fedin, “Efficient conversion of Nd: YAG laser radiation to the eye-safe spectral region by stimulated Raman scattering in BaWO4 crystal,” Quantum Electron. 40(8), 710–715 (2010).
[CrossRef]

T. T. Basiev, A. V. Gavrilov, V. V. Osiko, S. N. Smetanin, and A. V. Fedin, “High-average-power SRS conversion of radiation in a BaWO4 crystal,” Quantum Electron. 34(7), 649–651 (2004).
[CrossRef]

P. G. Zverev, T. T. Basiev, and A. M. Prokhorov, “Stimulated Raman scattering of laser radiation in Raman crystals,” Opt. Mater. 11(4), 335–352 (1999).
[CrossRef]

Basieva, M. N.

T. T. Basiev, M. N. Basieva, A. V. Gavrilov, M. N. Ershkov, L. I. Ivleva, V. V. Osiko, S. N. Smetanin, and A. V. Fedin, “Efficient conversion of Nd: YAG laser radiation to the eye-safe spectral region by stimulated Raman scattering in BaWO4 crystal,” Quantum Electron. 40(8), 710–715 (2010).
[CrossRef]

Bloembergen, N.

Y. R. Shen and N. Bloembergen, “Theory of Stimulated Brillouin and Raman Scattering,” Phys. Rev. 137(6A), A1787–A1805 (1965).
[CrossRef]

Bohn, M. J.

Brasseur, J. K.

Clarkson, W. A.

J. W. Kim, D. Y. Shen, J. K. Sahu, and W. A. Clarkson, “Fiber-Laser-Pumped Er:YAG lasers,” IEEE J. Sel. Top. Quant. 15(2), 361–371 (2009).
[CrossRef]

Ding, S.

S. Ding, X. Zhang, Q. Wang, P. Jia, C. Zhang, and B. Liu, “Numerical optimization of the extracavity Raman laser with barium nitrate crystal,” Opt. Commun. 267(2), 480–486 (2006).
[CrossRef]

Eichhorn, M.

M. Eichhorn, “High-power resonantly diode-pumped CW Er3+:YAG laser,” Appl. Phys. B 93(4), 773–778 (2008).
[CrossRef]

Eichler, H. J.

V. A. Lisinetskii, T. Riesbeck, H. Rhee, H. J. Eichler, and V. A. Orlovich, “High average power generation in barium nitrate Raman laser,” Appl. Phys. B 99(1-2), 127–134 (2010).
[CrossRef]

V. A. Lisinetskii, A. S. Grabtchikov, I. A. Khodasevich, H. J. Eichler, and V. A. Orlovich, “Efficient high energy 1st, 2nd or 3rd Stokes Raman generation in IR region,” Opt. Commun. 272(2), 509–513 (2007).
[CrossRef]

Ershkov, M. N.

T. T. Basiev, M. N. Basieva, A. V. Gavrilov, M. N. Ershkov, L. I. Ivleva, V. V. Osiko, S. N. Smetanin, and A. V. Fedin, “Efficient conversion of Nd: YAG laser radiation to the eye-safe spectral region by stimulated Raman scattering in BaWO4 crystal,” Quantum Electron. 40(8), 710–715 (2010).
[CrossRef]

Fedin, A. V.

T. T. Basiev, M. N. Basieva, A. V. Gavrilov, M. N. Ershkov, L. I. Ivleva, V. V. Osiko, S. N. Smetanin, and A. V. Fedin, “Efficient conversion of Nd: YAG laser radiation to the eye-safe spectral region by stimulated Raman scattering in BaWO4 crystal,” Quantum Electron. 40(8), 710–715 (2010).
[CrossRef]

T. T. Basiev, A. V. Gavrilov, V. V. Osiko, S. N. Smetanin, and A. V. Fedin, “High-average-power SRS conversion of radiation in a BaWO4 crystal,” Quantum Electron. 34(7), 649–651 (2004).
[CrossRef]

Feve, J. P. M.

Gavrilov, A. V.

T. T. Basiev, M. N. Basieva, A. V. Gavrilov, M. N. Ershkov, L. I. Ivleva, V. V. Osiko, S. N. Smetanin, and A. V. Fedin, “Efficient conversion of Nd: YAG laser radiation to the eye-safe spectral region by stimulated Raman scattering in BaWO4 crystal,” Quantum Electron. 40(8), 710–715 (2010).
[CrossRef]

T. T. Basiev, A. V. Gavrilov, V. V. Osiko, S. N. Smetanin, and A. V. Fedin, “High-average-power SRS conversion of radiation in a BaWO4 crystal,” Quantum Electron. 34(7), 649–651 (2004).
[CrossRef]

Grabtchikov, A. S.

V. A. Lisinetskii, A. S. Grabtchikov, I. A. Khodasevich, H. J. Eichler, and V. A. Orlovich, “Efficient high energy 1st, 2nd or 3rd Stokes Raman generation in IR region,” Opt. Commun. 272(2), 509–513 (2007).
[CrossRef]

Ivleva, L. I.

T. T. Basiev, M. N. Basieva, A. V. Gavrilov, M. N. Ershkov, L. I. Ivleva, V. V. Osiko, S. N. Smetanin, and A. V. Fedin, “Efficient conversion of Nd: YAG laser radiation to the eye-safe spectral region by stimulated Raman scattering in BaWO4 crystal,” Quantum Electron. 40(8), 710–715 (2010).
[CrossRef]

Jia, P.

S. Ding, X. Zhang, Q. Wang, P. Jia, C. Zhang, and B. Liu, “Numerical optimization of the extracavity Raman laser with barium nitrate crystal,” Opt. Commun. 267(2), 480–486 (2006).
[CrossRef]

Kannari, F.

N. Takei, S. Suzuki, and F. Kannari, “20-Hz operation of an eye-safe cascade Raman laser with a Ba(NO3)2 crystal,” Appl. Phys. B 74(6), 521–527 (2002).
[CrossRef]

Kaz, A.

Khodasevich, I. A.

V. A. Lisinetskii, A. S. Grabtchikov, I. A. Khodasevich, H. J. Eichler, and V. A. Orlovich, “Efficient high energy 1st, 2nd or 3rd Stokes Raman generation in IR region,” Opt. Commun. 272(2), 509–513 (2007).
[CrossRef]

Kim, J. W.

J. W. Kim, D. Y. Shen, J. K. Sahu, and W. A. Clarkson, “Fiber-Laser-Pumped Er:YAG lasers,” IEEE J. Sel. Top. Quant. 15(2), 361–371 (2009).
[CrossRef]

Lisinetskii, V. A.

V. A. Lisinetskii, T. Riesbeck, H. Rhee, H. J. Eichler, and V. A. Orlovich, “High average power generation in barium nitrate Raman laser,” Appl. Phys. B 99(1-2), 127–134 (2010).
[CrossRef]

V. A. Lisinetskii, A. S. Grabtchikov, I. A. Khodasevich, H. J. Eichler, and V. A. Orlovich, “Efficient high energy 1st, 2nd or 3rd Stokes Raman generation in IR region,” Opt. Commun. 272(2), 509–513 (2007).
[CrossRef]

Liu, B.

S. Ding, X. Zhang, Q. Wang, P. Jia, C. Zhang, and B. Liu, “Numerical optimization of the extracavity Raman laser with barium nitrate crystal,” Opt. Commun. 267(2), 480–486 (2006).
[CrossRef]

Marshall, L. R.

McKay, T.

Mildren, R. P.

Murray, J. T.

J. T. Murray, W. L. Austin, and R. C. Powell, “Intracavity Raman conversion and Raman beam cleanup,” Opt. Mater. 11(4), 353–371 (1999).
[CrossRef]

Myers, S.

Orlovich, V. A.

V. A. Lisinetskii, T. Riesbeck, H. Rhee, H. J. Eichler, and V. A. Orlovich, “High average power generation in barium nitrate Raman laser,” Appl. Phys. B 99(1-2), 127–134 (2010).
[CrossRef]

V. A. Lisinetskii, A. S. Grabtchikov, I. A. Khodasevich, H. J. Eichler, and V. A. Orlovich, “Efficient high energy 1st, 2nd or 3rd Stokes Raman generation in IR region,” Opt. Commun. 272(2), 509–513 (2007).
[CrossRef]

Osiko, V. V.

T. T. Basiev, M. N. Basieva, A. V. Gavrilov, M. N. Ershkov, L. I. Ivleva, V. V. Osiko, S. N. Smetanin, and A. V. Fedin, “Efficient conversion of Nd: YAG laser radiation to the eye-safe spectral region by stimulated Raman scattering in BaWO4 crystal,” Quantum Electron. 40(8), 710–715 (2010).
[CrossRef]

T. T. Basiev, A. V. Gavrilov, V. V. Osiko, S. N. Smetanin, and A. V. Fedin, “High-average-power SRS conversion of radiation in a BaWO4 crystal,” Quantum Electron. 34(7), 649–651 (2004).
[CrossRef]

Pask, H. M.

Piper, J. A.

Powell, R. C.

J. T. Murray, W. L. Austin, and R. C. Powell, “Intracavity Raman conversion and Raman beam cleanup,” Opt. Mater. 11(4), 353–371 (1999).
[CrossRef]

Prokhorov, A. M.

P. G. Zverev, T. T. Basiev, and A. M. Prokhorov, “Stimulated Raman scattering of laser radiation in Raman crystals,” Opt. Mater. 11(4), 335–352 (1999).
[CrossRef]

Rhee, H.

V. A. Lisinetskii, T. Riesbeck, H. Rhee, H. J. Eichler, and V. A. Orlovich, “High average power generation in barium nitrate Raman laser,” Appl. Phys. B 99(1-2), 127–134 (2010).
[CrossRef]

Richards, J.

Riesbeck, T.

V. A. Lisinetskii, T. Riesbeck, H. Rhee, H. J. Eichler, and V. A. Orlovich, “High average power generation in barium nitrate Raman laser,” Appl. Phys. B 99(1-2), 127–134 (2010).
[CrossRef]

Sabella, A.

Sahu, J. K.

J. W. Kim, D. Y. Shen, J. K. Sahu, and W. A. Clarkson, “Fiber-Laser-Pumped Er:YAG lasers,” IEEE J. Sel. Top. Quant. 15(2), 361–371 (2009).
[CrossRef]

Shen, D. Y.

J. W. Kim, D. Y. Shen, J. K. Sahu, and W. A. Clarkson, “Fiber-Laser-Pumped Er:YAG lasers,” IEEE J. Sel. Top. Quant. 15(2), 361–371 (2009).
[CrossRef]

Shen, Y. R.

Y. R. Shen and N. Bloembergen, “Theory of Stimulated Brillouin and Raman Scattering,” Phys. Rev. 137(6A), A1787–A1805 (1965).
[CrossRef]

Shortoff, K. E.

Smetanin, S. N.

T. T. Basiev, M. N. Basieva, A. V. Gavrilov, M. N. Ershkov, L. I. Ivleva, V. V. Osiko, S. N. Smetanin, and A. V. Fedin, “Efficient conversion of Nd: YAG laser radiation to the eye-safe spectral region by stimulated Raman scattering in BaWO4 crystal,” Quantum Electron. 40(8), 710–715 (2010).
[CrossRef]

T. T. Basiev, A. V. Gavrilov, V. V. Osiko, S. N. Smetanin, and A. V. Fedin, “High-average-power SRS conversion of radiation in a BaWO4 crystal,” Quantum Electron. 34(7), 649–651 (2004).
[CrossRef]

Suzuki, S.

N. Takei, S. Suzuki, and F. Kannari, “20-Hz operation of an eye-safe cascade Raman laser with a Ba(NO3)2 crystal,” Appl. Phys. B 74(6), 521–527 (2002).
[CrossRef]

Takei, N.

N. Takei, S. Suzuki, and F. Kannari, “20-Hz operation of an eye-safe cascade Raman laser with a Ba(NO3)2 crystal,” Appl. Phys. B 74(6), 521–527 (2002).
[CrossRef]

Wang, Q.

S. Ding, X. Zhang, Q. Wang, P. Jia, C. Zhang, and B. Liu, “Numerical optimization of the extracavity Raman laser with barium nitrate crystal,” Opt. Commun. 267(2), 480–486 (2006).
[CrossRef]

Zhang, C.

S. Ding, X. Zhang, Q. Wang, P. Jia, C. Zhang, and B. Liu, “Numerical optimization of the extracavity Raman laser with barium nitrate crystal,” Opt. Commun. 267(2), 480–486 (2006).
[CrossRef]

Zhang, X.

S. Ding, X. Zhang, Q. Wang, P. Jia, C. Zhang, and B. Liu, “Numerical optimization of the extracavity Raman laser with barium nitrate crystal,” Opt. Commun. 267(2), 480–486 (2006).
[CrossRef]

Zverev, P. G.

P. G. Zverev, T. T. Basiev, and A. M. Prokhorov, “Stimulated Raman scattering of laser radiation in Raman crystals,” Opt. Mater. 11(4), 335–352 (1999).
[CrossRef]

Appl. Phys. B (3)

M. Eichhorn, “High-power resonantly diode-pumped CW Er3+:YAG laser,” Appl. Phys. B 93(4), 773–778 (2008).
[CrossRef]

V. A. Lisinetskii, T. Riesbeck, H. Rhee, H. J. Eichler, and V. A. Orlovich, “High average power generation in barium nitrate Raman laser,” Appl. Phys. B 99(1-2), 127–134 (2010).
[CrossRef]

N. Takei, S. Suzuki, and F. Kannari, “20-Hz operation of an eye-safe cascade Raman laser with a Ba(NO3)2 crystal,” Appl. Phys. B 74(6), 521–527 (2002).
[CrossRef]

IEEE J. Sel. Top. Quant. (1)

J. W. Kim, D. Y. Shen, J. K. Sahu, and W. A. Clarkson, “Fiber-Laser-Pumped Er:YAG lasers,” IEEE J. Sel. Top. Quant. 15(2), 361–371 (2009).
[CrossRef]

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

Opt. Commun. (2)

S. Ding, X. Zhang, Q. Wang, P. Jia, C. Zhang, and B. Liu, “Numerical optimization of the extracavity Raman laser with barium nitrate crystal,” Opt. Commun. 267(2), 480–486 (2006).
[CrossRef]

V. A. Lisinetskii, A. S. Grabtchikov, I. A. Khodasevich, H. J. Eichler, and V. A. Orlovich, “Efficient high energy 1st, 2nd or 3rd Stokes Raman generation in IR region,” Opt. Commun. 272(2), 509–513 (2007).
[CrossRef]

Opt. Express (1)

Opt. Lett. (3)

Opt. Mater. (2)

J. T. Murray, W. L. Austin, and R. C. Powell, “Intracavity Raman conversion and Raman beam cleanup,” Opt. Mater. 11(4), 353–371 (1999).
[CrossRef]

P. G. Zverev, T. T. Basiev, and A. M. Prokhorov, “Stimulated Raman scattering of laser radiation in Raman crystals,” Opt. Mater. 11(4), 335–352 (1999).
[CrossRef]

Phys. Rev. (1)

Y. R. Shen and N. Bloembergen, “Theory of Stimulated Brillouin and Raman Scattering,” Phys. Rev. 137(6A), A1787–A1805 (1965).
[CrossRef]

Quantum Electron. (2)

T. T. Basiev, A. V. Gavrilov, V. V. Osiko, S. N. Smetanin, and A. V. Fedin, “High-average-power SRS conversion of radiation in a BaWO4 crystal,” Quantum Electron. 34(7), 649–651 (2004).
[CrossRef]

T. T. Basiev, M. N. Basieva, A. V. Gavrilov, M. N. Ershkov, L. I. Ivleva, V. V. Osiko, S. N. Smetanin, and A. V. Fedin, “Efficient conversion of Nd: YAG laser radiation to the eye-safe spectral region by stimulated Raman scattering in BaWO4 crystal,” Quantum Electron. 40(8), 710–715 (2010).
[CrossRef]

Other (1)

A. M. Zaitsev, Optical Properties of Diamond (Springer-Verlag, Berlin, 2001), Chap. 4.

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Figures (5)

Fig. 1
Fig. 1

Experimental set up of the diamond Raman laser.

Fig. 2
Fig. 2

a). 2nd Stokes output power and quantum conversion efficiency for output coupler M3. Dashed lines represent modelled values where the Stokes beam spot sizes are the same as the pump. Solid lines are modelled values taking into account the measured spot sizes for each wavelength. b) Measured focus profile of output beam with fits of M2 = 1.05.

Fig. 3
Fig. 3

Pump and Stokes pulse traces for 0.4 mJ (2 W) pump input and M3 output coupler. (a) Measured. (b) Modelled.

Fig. 4
Fig. 4

Measured and modelled slope efficiency dependence on output coupler reflectivity at the 2nd Stokes wavelength. The experimental value at 8% (i.e., using M4) shows an adjusted point based on the modelled improvement obtained when changing the pump reflectivity of the output coupler from 53% to 99%.

Fig. 5
Fig. 5

Measured traces at 0.4 mJ (2 W) pump for different output couplers. (a) residual pump. (b) 1st Stokes

Tables (1)

Tables Icon

Table 1 Reflectivities of output couplers at pump and Stokes wavelengths

Equations (2)

Equations on this page are rendered with MathJax. Learn more.

d P F dz = g R ( P F A F,1 P 1 A F,1 ) A F α F P F d P 1 dz = g R λ P λ 1 ( P F A F,1 P 1 A F,1 P 1 A 1,2 P 2 A 1,2 ) A 1 + K SP P F α 1 P 1 d P 2 dz = g R λ P λ 2 ( P 1 A 1,2 P 2 A 1,2 P 2 A 2,3 P 3 A 2,3 ) A 2 + K SP P 1 α 2 P 2 d P 3 dz = g R λ P λ 3 ( P 2 A 2,3 P 3 A 2,3 ) A 3 + K SP P 2 α 3 P 3
A m,n = I m dA I n dA I m I n dA

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