Abstract

We describe a new approach for the generation of coherent ultraviolet radiation. Continuous-wave ultraviolet light at 320 nm has been obtained by intracavity frequency doubling of red-emitting Praseodymium lasers. Lasing at the 640-nm fundamental wavelength in Pr:LiYF4 and Pr:BaY2F8 was realized by employing an optically pumped semiconductor laser at 480 nm as pump source. Using LiB3O5 as nonlinear medium, ~19 mW of ultraviolet radiation with ~9% optical efficiency with respect to absorbed power was reached for both laser crystals; the visible-to-ultraviolet conversion efficiency was 26% and 35% for Pr:LiYF4 and Pr:BaY2F8, respectively.

© 2006 Optical Society of America

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    [CrossRef]
  4. L.B. Chang, S.C. Wang, A.H. Kung, "Efficient compact watt-level deep-ultraviolet laser generated from a multi-kHz Q-switched diode-pumped solid-state laser system," Opt. Commun. 209, 397-401 (2002).
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]

2005

A. Richter, H. Scheife, E. Heumann, G. Huber, A. Diening, and W. Seelert "Semiconductor laser pumping of a continuous-wave Pr3+-doped ZBLAN fiber laser," Electron. Lett. 41, 794-795 (2005).
[CrossRef]

2004

K. Mizuuchi, A. Morikawa, T. Sugita, K. Yamamoto, N. Pavel, and T. Taira, "Continuous-wave ultraviolet generation at 354 nm in a periodically poled MgO:LiNbO3 by frequency tripling of a diode end-pumped Nd:GdVO4 microlaser," Appl. Phys. Lett. 85, 3959-3961 (2004).
[CrossRef]

A. Richter, E. Heumann, E. Osiac, G. Huber, W. Seelert, and A. Diening, "Diode pumping of a continuous-wave Pr3+-doped LiYF4 laser," Opt. Lett. 29, 2638-2670 (2004).
[CrossRef] [PubMed]

2003

H. Kitano, T. Matsui, K. Sato, N. Ushiyama, M. Yoshimura, Y. Mori, and T. Sasaki, "Efficient 355-nm generation in CsB3O5 crystal," Opt. Lett. 28, 263-265 (2003).
[CrossRef] [PubMed]

E. Osiac, E. Heumann, G. Huber, S. Kück, E. Sani, A. Toncelli, and M. Tonelli, "Orange and red upconversion laser pumped by an avalanche mechanism in Pr3+,Yb3+:BaY2F8," Appl. Phys. Lett. 82, 3832-3834 (2003).
[CrossRef]

2002

L.B. Chang, S.C. Wang, A.H. Kung, "Efficient compact watt-level deep-ultraviolet laser generated from a multi-kHz Q-switched diode-pumped solid-state laser system," Opt. Commun. 209, 397-401 (2002).
[CrossRef]

A. Agnesi, A. Guandalini, and G. Reali, "Efficient 671-nm pump source by intracavity doubling of a diode-pumped Nd:YVO4 laser," J. Opt. Soc. Am. B 19, 1078-1082 (2002).
[CrossRef]

1997

1995

1994

T. Sandrock, T. Danger, E. Heumann, G. Huber, and B.H.T. Chai, "Efficient continuous-wave laser emission of Pr3+-doped fluorides at room temperature," Appl. Phys. B 58, 149-151 (1994).
[CrossRef]

1991

R.G. Smart, D.C. Hanna, A.C. Tropper, S.T. Davey, S.F. Carter, and D. Szebesta, "CW room temperature upconversion lasing at blue, green and red wavelengths in infrared-pumped Pr3+-doped fluoride fibre," Electron. Lett. 27, 1307-1309 (1991).
[CrossRef]

R.G. Smart, J.N. Carter, A.C. Tropper, D.C. Hanna, S.T. Davey, S.F. Carter, and D. Szebesta, "CW room temperature operation of praseodymium-doped fluorozirconate glass fibre lasers in the blue-green, green and red spectral regions," Opt. Commun. 86, 333-340 (1991).
[CrossRef]

1989

1988

J.A. Caird, S.A. Payne, P.R. Staber, A.J. Ramponi, L.L. Chase, and W.F. Krupke, "Quantum Electronics properties of the Na3Ga2Li3F12:Cr3+ laser," IEEE. J. Quantum Electron. QE-24, 1077-1099 (1988).
[CrossRef]

1986

1970

R.G. Smith, "Theory of intracavity optical second-harmonic generation," IEEE J. Quantum Electron. 6, 215-223 (1970).
[CrossRef]

1966

Agnesi, A.

Baer, T.

Caird, J.A.

J.A. Caird, S.A. Payne, P.R. Staber, A.J. Ramponi, L.L. Chase, and W.F. Krupke, "Quantum Electronics properties of the Na3Ga2Li3F12:Cr3+ laser," IEEE. J. Quantum Electron. QE-24, 1077-1099 (1988).
[CrossRef]

Carter, J.N.

R.G. Smart, J.N. Carter, A.C. Tropper, D.C. Hanna, S.T. Davey, S.F. Carter, and D. Szebesta, "CW room temperature operation of praseodymium-doped fluorozirconate glass fibre lasers in the blue-green, green and red spectral regions," Opt. Commun. 86, 333-340 (1991).
[CrossRef]

Carter, S.F.

R.G. Smart, J.N. Carter, A.C. Tropper, D.C. Hanna, S.T. Davey, S.F. Carter, and D. Szebesta, "CW room temperature operation of praseodymium-doped fluorozirconate glass fibre lasers in the blue-green, green and red spectral regions," Opt. Commun. 86, 333-340 (1991).
[CrossRef]

R.G. Smart, D.C. Hanna, A.C. Tropper, S.T. Davey, S.F. Carter, and D. Szebesta, "CW room temperature upconversion lasing at blue, green and red wavelengths in infrared-pumped Pr3+-doped fluoride fibre," Electron. Lett. 27, 1307-1309 (1991).
[CrossRef]

Chai, B.H.T.

T. Sandrock, T. Danger, E. Heumann, G. Huber, and B.H.T. Chai, "Efficient continuous-wave laser emission of Pr3+-doped fluorides at room temperature," Appl. Phys. B 58, 149-151 (1994).
[CrossRef]

Chang, L.B.

L.B. Chang, S.C. Wang, A.H. Kung, "Efficient compact watt-level deep-ultraviolet laser generated from a multi-kHz Q-switched diode-pumped solid-state laser system," Opt. Commun. 209, 397-401 (2002).
[CrossRef]

Chase, L.L.

J.A. Caird, S.A. Payne, P.R. Staber, A.J. Ramponi, L.L. Chase, and W.F. Krupke, "Quantum Electronics properties of the Na3Ga2Li3F12:Cr3+ laser," IEEE. J. Quantum Electron. QE-24, 1077-1099 (1988).
[CrossRef]

Chen, C.

Chen, N.

Danger, T.

T. Sandrock, T. Danger, E. Heumann, G. Huber, and B.H.T. Chai, "Efficient continuous-wave laser emission of Pr3+-doped fluorides at room temperature," Appl. Phys. B 58, 149-151 (1994).
[CrossRef]

Davey, S.T.

R.G. Smart, D.C. Hanna, A.C. Tropper, S.T. Davey, S.F. Carter, and D. Szebesta, "CW room temperature upconversion lasing at blue, green and red wavelengths in infrared-pumped Pr3+-doped fluoride fibre," Electron. Lett. 27, 1307-1309 (1991).
[CrossRef]

R.G. Smart, J.N. Carter, A.C. Tropper, D.C. Hanna, S.T. Davey, S.F. Carter, and D. Szebesta, "CW room temperature operation of praseodymium-doped fluorozirconate glass fibre lasers in the blue-green, green and red spectral regions," Opt. Commun. 86, 333-340 (1991).
[CrossRef]

Deng, D.

Diening, A.

A. Richter, H. Scheife, E. Heumann, G. Huber, A. Diening, and W. Seelert "Semiconductor laser pumping of a continuous-wave Pr3+-doped ZBLAN fiber laser," Electron. Lett. 41, 794-795 (2005).
[CrossRef]

A. Richter, E. Heumann, E. Osiac, G. Huber, W. Seelert, and A. Diening, "Diode pumping of a continuous-wave Pr3+-doped LiYF4 laser," Opt. Lett. 29, 2638-2670 (2004).
[CrossRef] [PubMed]

Guandalini, A.

Hanna, D.C.

R.G. Smart, D.C. Hanna, A.C. Tropper, S.T. Davey, S.F. Carter, and D. Szebesta, "CW room temperature upconversion lasing at blue, green and red wavelengths in infrared-pumped Pr3+-doped fluoride fibre," Electron. Lett. 27, 1307-1309 (1991).
[CrossRef]

R.G. Smart, J.N. Carter, A.C. Tropper, D.C. Hanna, S.T. Davey, S.F. Carter, and D. Szebesta, "CW room temperature operation of praseodymium-doped fluorozirconate glass fibre lasers in the blue-green, green and red spectral regions," Opt. Commun. 86, 333-340 (1991).
[CrossRef]

Heumann, E.

A. Richter, H. Scheife, E. Heumann, G. Huber, A. Diening, and W. Seelert "Semiconductor laser pumping of a continuous-wave Pr3+-doped ZBLAN fiber laser," Electron. Lett. 41, 794-795 (2005).
[CrossRef]

A. Richter, E. Heumann, E. Osiac, G. Huber, W. Seelert, and A. Diening, "Diode pumping of a continuous-wave Pr3+-doped LiYF4 laser," Opt. Lett. 29, 2638-2670 (2004).
[CrossRef] [PubMed]

E. Osiac, E. Heumann, G. Huber, S. Kück, E. Sani, A. Toncelli, and M. Tonelli, "Orange and red upconversion laser pumped by an avalanche mechanism in Pr3+,Yb3+:BaY2F8," Appl. Phys. Lett. 82, 3832-3834 (2003).
[CrossRef]

T. Sandrock, H. Scheife, E. Heumann, and G. Huber, "High-power continuous-wave upconversion fiber laser at room temperature," Opt. Lett. 22, 808-810 (1997).
[CrossRef] [PubMed]

T. Sandrock, T. Danger, E. Heumann, G. Huber, and B.H.T. Chai, "Efficient continuous-wave laser emission of Pr3+-doped fluorides at room temperature," Appl. Phys. B 58, 149-151 (1994).
[CrossRef]

Huber, G.

A. Richter, H. Scheife, E. Heumann, G. Huber, A. Diening, and W. Seelert "Semiconductor laser pumping of a continuous-wave Pr3+-doped ZBLAN fiber laser," Electron. Lett. 41, 794-795 (2005).
[CrossRef]

A. Richter, E. Heumann, E. Osiac, G. Huber, W. Seelert, and A. Diening, "Diode pumping of a continuous-wave Pr3+-doped LiYF4 laser," Opt. Lett. 29, 2638-2670 (2004).
[CrossRef] [PubMed]

E. Osiac, E. Heumann, G. Huber, S. Kück, E. Sani, A. Toncelli, and M. Tonelli, "Orange and red upconversion laser pumped by an avalanche mechanism in Pr3+,Yb3+:BaY2F8," Appl. Phys. Lett. 82, 3832-3834 (2003).
[CrossRef]

T. Sandrock, H. Scheife, E. Heumann, and G. Huber, "High-power continuous-wave upconversion fiber laser at room temperature," Opt. Lett. 22, 808-810 (1997).
[CrossRef] [PubMed]

T. Sandrock, T. Danger, E. Heumann, G. Huber, and B.H.T. Chai, "Efficient continuous-wave laser emission of Pr3+-doped fluorides at room temperature," Appl. Phys. B 58, 149-151 (1994).
[CrossRef]

Kaneda, Y.

Kitano, H.

Kogelnik, H.

Krupke, W.F.

J.A. Caird, S.A. Payne, P.R. Staber, A.J. Ramponi, L.L. Chase, and W.F. Krupke, "Quantum Electronics properties of the Na3Ga2Li3F12:Cr3+ laser," IEEE. J. Quantum Electron. QE-24, 1077-1099 (1988).
[CrossRef]

Kubota, S.

Kück, S.

E. Osiac, E. Heumann, G. Huber, S. Kück, E. Sani, A. Toncelli, and M. Tonelli, "Orange and red upconversion laser pumped by an avalanche mechanism in Pr3+,Yb3+:BaY2F8," Appl. Phys. Lett. 82, 3832-3834 (2003).
[CrossRef]

Kung, A.H.

L.B. Chang, S.C. Wang, A.H. Kung, "Efficient compact watt-level deep-ultraviolet laser generated from a multi-kHz Q-switched diode-pumped solid-state laser system," Opt. Commun. 209, 397-401 (2002).
[CrossRef]

Li, T.

Matsui, T.

Mizuuchi, K.

K. Mizuuchi, A. Morikawa, T. Sugita, K. Yamamoto, N. Pavel, and T. Taira, "Continuous-wave ultraviolet generation at 354 nm in a periodically poled MgO:LiNbO3 by frequency tripling of a diode end-pumped Nd:GdVO4 microlaser," Appl. Phys. Lett. 85, 3959-3961 (2004).
[CrossRef]

Mori, Y.

Morikawa, A.

K. Mizuuchi, A. Morikawa, T. Sugita, K. Yamamoto, N. Pavel, and T. Taira, "Continuous-wave ultraviolet generation at 354 nm in a periodically poled MgO:LiNbO3 by frequency tripling of a diode end-pumped Nd:GdVO4 microlaser," Appl. Phys. Lett. 85, 3959-3961 (2004).
[CrossRef]

Osiac, E.

A. Richter, E. Heumann, E. Osiac, G. Huber, W. Seelert, and A. Diening, "Diode pumping of a continuous-wave Pr3+-doped LiYF4 laser," Opt. Lett. 29, 2638-2670 (2004).
[CrossRef] [PubMed]

E. Osiac, E. Heumann, G. Huber, S. Kück, E. Sani, A. Toncelli, and M. Tonelli, "Orange and red upconversion laser pumped by an avalanche mechanism in Pr3+,Yb3+:BaY2F8," Appl. Phys. Lett. 82, 3832-3834 (2003).
[CrossRef]

Pavel, N.

K. Mizuuchi, A. Morikawa, T. Sugita, K. Yamamoto, N. Pavel, and T. Taira, "Continuous-wave ultraviolet generation at 354 nm in a periodically poled MgO:LiNbO3 by frequency tripling of a diode end-pumped Nd:GdVO4 microlaser," Appl. Phys. Lett. 85, 3959-3961 (2004).
[CrossRef]

Payne, S.A.

J.A. Caird, S.A. Payne, P.R. Staber, A.J. Ramponi, L.L. Chase, and W.F. Krupke, "Quantum Electronics properties of the Na3Ga2Li3F12:Cr3+ laser," IEEE. J. Quantum Electron. QE-24, 1077-1099 (1988).
[CrossRef]

Ramponi, A.J.

J.A. Caird, S.A. Payne, P.R. Staber, A.J. Ramponi, L.L. Chase, and W.F. Krupke, "Quantum Electronics properties of the Na3Ga2Li3F12:Cr3+ laser," IEEE. J. Quantum Electron. QE-24, 1077-1099 (1988).
[CrossRef]

Reali, G.

Richter, A.

A. Richter, H. Scheife, E. Heumann, G. Huber, A. Diening, and W. Seelert "Semiconductor laser pumping of a continuous-wave Pr3+-doped ZBLAN fiber laser," Electron. Lett. 41, 794-795 (2005).
[CrossRef]

A. Richter, E. Heumann, E. Osiac, G. Huber, W. Seelert, and A. Diening, "Diode pumping of a continuous-wave Pr3+-doped LiYF4 laser," Opt. Lett. 29, 2638-2670 (2004).
[CrossRef] [PubMed]

Sandrock, T.

T. Sandrock, H. Scheife, E. Heumann, and G. Huber, "High-power continuous-wave upconversion fiber laser at room temperature," Opt. Lett. 22, 808-810 (1997).
[CrossRef] [PubMed]

T. Sandrock, T. Danger, E. Heumann, G. Huber, and B.H.T. Chai, "Efficient continuous-wave laser emission of Pr3+-doped fluorides at room temperature," Appl. Phys. B 58, 149-151 (1994).
[CrossRef]

Sani, E.

E. Osiac, E. Heumann, G. Huber, S. Kück, E. Sani, A. Toncelli, and M. Tonelli, "Orange and red upconversion laser pumped by an avalanche mechanism in Pr3+,Yb3+:BaY2F8," Appl. Phys. Lett. 82, 3832-3834 (2003).
[CrossRef]

Sasaki, T.

Sato, K.

Scheife, H.

A. Richter, H. Scheife, E. Heumann, G. Huber, A. Diening, and W. Seelert "Semiconductor laser pumping of a continuous-wave Pr3+-doped ZBLAN fiber laser," Electron. Lett. 41, 794-795 (2005).
[CrossRef]

T. Sandrock, H. Scheife, E. Heumann, and G. Huber, "High-power continuous-wave upconversion fiber laser at room temperature," Opt. Lett. 22, 808-810 (1997).
[CrossRef] [PubMed]

Seelert, W.

A. Richter, H. Scheife, E. Heumann, G. Huber, A. Diening, and W. Seelert "Semiconductor laser pumping of a continuous-wave Pr3+-doped ZBLAN fiber laser," Electron. Lett. 41, 794-795 (2005).
[CrossRef]

A. Richter, E. Heumann, E. Osiac, G. Huber, W. Seelert, and A. Diening, "Diode pumping of a continuous-wave Pr3+-doped LiYF4 laser," Opt. Lett. 29, 2638-2670 (2004).
[CrossRef] [PubMed]

Smart, R.G.

R.G. Smart, D.C. Hanna, A.C. Tropper, S.T. Davey, S.F. Carter, and D. Szebesta, "CW room temperature upconversion lasing at blue, green and red wavelengths in infrared-pumped Pr3+-doped fluoride fibre," Electron. Lett. 27, 1307-1309 (1991).
[CrossRef]

R.G. Smart, J.N. Carter, A.C. Tropper, D.C. Hanna, S.T. Davey, S.F. Carter, and D. Szebesta, "CW room temperature operation of praseodymium-doped fluorozirconate glass fibre lasers in the blue-green, green and red spectral regions," Opt. Commun. 86, 333-340 (1991).
[CrossRef]

Smith, R.G.

R.G. Smith, "Theory of intracavity optical second-harmonic generation," IEEE J. Quantum Electron. 6, 215-223 (1970).
[CrossRef]

Staber, P.R.

J.A. Caird, S.A. Payne, P.R. Staber, A.J. Ramponi, L.L. Chase, and W.F. Krupke, "Quantum Electronics properties of the Na3Ga2Li3F12:Cr3+ laser," IEEE. J. Quantum Electron. QE-24, 1077-1099 (1988).
[CrossRef]

Sugita, T.

K. Mizuuchi, A. Morikawa, T. Sugita, K. Yamamoto, N. Pavel, and T. Taira, "Continuous-wave ultraviolet generation at 354 nm in a periodically poled MgO:LiNbO3 by frequency tripling of a diode end-pumped Nd:GdVO4 microlaser," Appl. Phys. Lett. 85, 3959-3961 (2004).
[CrossRef]

Szebesta, D.

R.G. Smart, D.C. Hanna, A.C. Tropper, S.T. Davey, S.F. Carter, and D. Szebesta, "CW room temperature upconversion lasing at blue, green and red wavelengths in infrared-pumped Pr3+-doped fluoride fibre," Electron. Lett. 27, 1307-1309 (1991).
[CrossRef]

R.G. Smart, J.N. Carter, A.C. Tropper, D.C. Hanna, S.T. Davey, S.F. Carter, and D. Szebesta, "CW room temperature operation of praseodymium-doped fluorozirconate glass fibre lasers in the blue-green, green and red spectral regions," Opt. Commun. 86, 333-340 (1991).
[CrossRef]

Taira, T.

K. Mizuuchi, A. Morikawa, T. Sugita, K. Yamamoto, N. Pavel, and T. Taira, "Continuous-wave ultraviolet generation at 354 nm in a periodically poled MgO:LiNbO3 by frequency tripling of a diode end-pumped Nd:GdVO4 microlaser," Appl. Phys. Lett. 85, 3959-3961 (2004).
[CrossRef]

Toncelli, A.

E. Osiac, E. Heumann, G. Huber, S. Kück, E. Sani, A. Toncelli, and M. Tonelli, "Orange and red upconversion laser pumped by an avalanche mechanism in Pr3+,Yb3+:BaY2F8," Appl. Phys. Lett. 82, 3832-3834 (2003).
[CrossRef]

Tonelli, M.

E. Osiac, E. Heumann, G. Huber, S. Kück, E. Sani, A. Toncelli, and M. Tonelli, "Orange and red upconversion laser pumped by an avalanche mechanism in Pr3+,Yb3+:BaY2F8," Appl. Phys. Lett. 82, 3832-3834 (2003).
[CrossRef]

Tropper, A.C.

R.G. Smart, J.N. Carter, A.C. Tropper, D.C. Hanna, S.T. Davey, S.F. Carter, and D. Szebesta, "CW room temperature operation of praseodymium-doped fluorozirconate glass fibre lasers in the blue-green, green and red spectral regions," Opt. Commun. 86, 333-340 (1991).
[CrossRef]

R.G. Smart, D.C. Hanna, A.C. Tropper, S.T. Davey, S.F. Carter, and D. Szebesta, "CW room temperature upconversion lasing at blue, green and red wavelengths in infrared-pumped Pr3+-doped fluoride fibre," Electron. Lett. 27, 1307-1309 (1991).
[CrossRef]

Ushiyama, N.

Wang, S.C.

L.B. Chang, S.C. Wang, A.H. Kung, "Efficient compact watt-level deep-ultraviolet laser generated from a multi-kHz Q-switched diode-pumped solid-state laser system," Opt. Commun. 209, 397-401 (2002).
[CrossRef]

Wu, B.

Xu, Z.

Yamamoto, K.

K. Mizuuchi, A. Morikawa, T. Sugita, K. Yamamoto, N. Pavel, and T. Taira, "Continuous-wave ultraviolet generation at 354 nm in a periodically poled MgO:LiNbO3 by frequency tripling of a diode end-pumped Nd:GdVO4 microlaser," Appl. Phys. Lett. 85, 3959-3961 (2004).
[CrossRef]

Yoshimura, M.

Appl. Opt.

Appl. Phys. B

T. Sandrock, T. Danger, E. Heumann, G. Huber, and B.H.T. Chai, "Efficient continuous-wave laser emission of Pr3+-doped fluorides at room temperature," Appl. Phys. B 58, 149-151 (1994).
[CrossRef]

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K. Mizuuchi, A. Morikawa, T. Sugita, K. Yamamoto, N. Pavel, and T. Taira, "Continuous-wave ultraviolet generation at 354 nm in a periodically poled MgO:LiNbO3 by frequency tripling of a diode end-pumped Nd:GdVO4 microlaser," Appl. Phys. Lett. 85, 3959-3961 (2004).
[CrossRef]

E. Osiac, E. Heumann, G. Huber, S. Kück, E. Sani, A. Toncelli, and M. Tonelli, "Orange and red upconversion laser pumped by an avalanche mechanism in Pr3+,Yb3+:BaY2F8," Appl. Phys. Lett. 82, 3832-3834 (2003).
[CrossRef]

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R.G. Smart, D.C. Hanna, A.C. Tropper, S.T. Davey, S.F. Carter, and D. Szebesta, "CW room temperature upconversion lasing at blue, green and red wavelengths in infrared-pumped Pr3+-doped fluoride fibre," Electron. Lett. 27, 1307-1309 (1991).
[CrossRef]

A. Richter, H. Scheife, E. Heumann, G. Huber, A. Diening, and W. Seelert "Semiconductor laser pumping of a continuous-wave Pr3+-doped ZBLAN fiber laser," Electron. Lett. 41, 794-795 (2005).
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Opt. Commun.

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[CrossRef]

R.G. Smart, J.N. Carter, A.C. Tropper, D.C. Hanna, S.T. Davey, S.F. Carter, and D. Szebesta, "CW room temperature operation of praseodymium-doped fluorozirconate glass fibre lasers in the blue-green, green and red spectral regions," Opt. Commun. 86, 333-340 (1991).
[CrossRef]

Opt. Lett.

Other

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Figures (5)

Fig. 1.
Fig. 1.

Schematics of the (a) Pr:YLF and (b) Pr:BYF lasers pumped by a cw OPS source and intracavity frequency-doubled by LBO nonlinear crystals. L: lens; M1, M2, M3: mirrors.

Fig. 2.
Fig. 2.

Output power at 640 nm vs. the absorbed pump power at 480 nm of Pr:YLF at various output couplings T of mirror M3.

Fig. 3.
Fig. 3.

(a) Output power at 640 nm vs. the absorbed power at 480 nm for the Pr:BYF laser and (b) a general view of the red emitting Pr:BYF laser.

Fig. 4.
Fig. 4.

Cw UV power at 320 nm vs. the absorbed pump power for the Pr:YLF laser with LBO crystals of various length. Continuous lines are simulations (according to the text).

Fig. 5.
Fig. 5.

Cw UV power at 320 nm vs. the absorbed pump power for the Pr:BYF laser.

Equations (2)

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P 2 ω = πω 1 2 8 k I S 2 { ( k + L i I S ) + [ ( k + L i I S ) 2 + 4 k I S ( 2 K C P a L i ) ] 1 2 } 2 ,
k = 4 π 2 λ ω 2 Z 0 d eff 2 2 n 2 3 ω 1 2 ω 2 2 β ,

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