Abstract

We report the realization of a tapered diode laser operated in a coupled ring cavity that significantly improves the coherence properties of the tapered laser and efficiently generates tunable light at the second harmonic frequency. The tapered diode laser is tunable with single-frequency output in the broad wavelength range from 1049 nm to 1093 nm and the beam propagation factor is improved from M2 = 2.8 to below 1.1. The laser frequency is automatically locked to the cavity resonance frequency using optical feedback. Furthermore, we show that this adaptive external cavity approach leads to efficient frequency doubling. More than 500 mW green output power is obtained by placing a periodically poled LiNbO3 crystal in the external cavity. The single frequency green output from the laser system is tunable in the 530 nm to 533 nm range limited by the LiNbO3 crystal. The optical to optical conversion efficiency exceeds 30%.

©2013 Optical Society of America

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References

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  1. H. K. Nguyen, M. H. Hu, N. Nishiyama, N. J. Visovsky, Y. Li, K. Song, X. Liu, J. Gollier, L. C. Hughes, R. Bhat, and C.-E. Zah, “107-mW low-noise green-light emission by frequency doubling of a reliable 1060 nm DFB semiconductor laser diode,” IEEE Photon. Technol. Lett. 18(5), 682–684 (2006).
    [Crossref]
  2. O. B. Jensen, P. E. Andersen, B. Sumpf, K.-H. Hasler, G. Erbert, and P. M. Petersen, “1.5 W green light generation by single-pass second harmonic generation of a single-frequency tapered diode laser,” Opt. Express 17(8), 6532–6539 (2009).
    [Crossref] [PubMed]
  3. A. Müller, O. B. Jensen, K. H. Hasler, B. Sumpf, G. Erbert, P. E. Andersen, and P. M. Petersen, “Efficient concept for generation of diffraction-limited green light by sum-frequency generation of spectrally combined tapered diode lasers,” Opt. Lett. 37(18), 3753–3755 (2012).
    [Crossref] [PubMed]
  4. A. Jechow and R. Menzel, “Efficient blue light generation by frequency doubling of a broad-area diode laser in a compact external cavity,” Appl. Phys. B 89(4), 507–511 (2007).
    [Crossref]
  5. A. Jechow, R. Menzel, K. Paschke, and G. Erbert, “Blue-green light generation using high brilliance edge emitting diode lasers,” Laser Photonics Rev. 4(5), 633–655 (2010).
    [Crossref]
  6. J. H. Lundeman, O. B. Jensen, P. E. Andersen, S. Andersson-Engels, B. Sumpf, G. Erbert, and P. M. Petersen, “High power 404 nm source based on second harmonic generation in PPKTP of a tapered external feedback diode laser,” Opt. Express 16(4), 2486–2493 (2008).
    [Crossref] [PubMed]
  7. T. Meier, B. Willke, and K. Danzmann, “Continuous-wave single-frequency 532 nm laser source emitting 130 W into the fundamental transversal mode,” Opt. Lett. 35(22), 3742–3744 (2010).
    [Crossref] [PubMed]
  8. W. J. Kozlovsky, W. P. Risk, W. Lenth, B. G. Kim, G. L. Bona, H. Jaeckel, and D. J. Webb, “Blue light generation by resonator-enhanced frequency-doubling of an extended-cavity diode laser,” Appl. Phys. Lett. 65(5), 525–527 (1994).
    [Crossref]
  9. X. G. Sun, G. W. Switzer, and J. L. Carlsten, “Blue light generation in an external ring cavity using both cavity and grating feedback,” Appl. Phys. Lett. 76(8), 955–957 (2000).
    [Crossref]
  10. D. Skoczowsky, A. Jechow, R. Menzel, K. Paschke, and G. Erbert, “Efficient second-harmonic generation using a semiconductor tapered amplifier in a coupled ring-resonator geometry,” Opt. Lett. 35(2), 232–234 (2010).
    [Crossref] [PubMed]
  11. D. Skoczowsky, A. Jechow, H. Stürmer, T. Poßner, J. Sacher, and R. Menzel, “Quasi monolithic ring resonator for efficient frequency doubling of an external cavity diode laser,” Appl. Phys. B 98(4), 751–757 (2010).
    [Crossref]
  12. A. Knauer, G. Erbert, R. Staske, B. Sumpf, H. Wenzel, and M. Weyers, “High-power 808-nm lasers with a super-large optical cavity,” Semicond. Sci. Technol. 20(6), 621–624 (2005).
    [Crossref]
  13. O. B. Jensen, B. Sumpf, G. Erbert, and P. M. Petersen, “Widely tunable high-power tapered diode laser at 1060 nm,” IEEE Photon. Technol. Lett. 23(21), 1624–1626 (2011).
    [Crossref]

2012 (1)

2011 (1)

O. B. Jensen, B. Sumpf, G. Erbert, and P. M. Petersen, “Widely tunable high-power tapered diode laser at 1060 nm,” IEEE Photon. Technol. Lett. 23(21), 1624–1626 (2011).
[Crossref]

2010 (4)

D. Skoczowsky, A. Jechow, H. Stürmer, T. Poßner, J. Sacher, and R. Menzel, “Quasi monolithic ring resonator for efficient frequency doubling of an external cavity diode laser,” Appl. Phys. B 98(4), 751–757 (2010).
[Crossref]

A. Jechow, R. Menzel, K. Paschke, and G. Erbert, “Blue-green light generation using high brilliance edge emitting diode lasers,” Laser Photonics Rev. 4(5), 633–655 (2010).
[Crossref]

D. Skoczowsky, A. Jechow, R. Menzel, K. Paschke, and G. Erbert, “Efficient second-harmonic generation using a semiconductor tapered amplifier in a coupled ring-resonator geometry,” Opt. Lett. 35(2), 232–234 (2010).
[Crossref] [PubMed]

T. Meier, B. Willke, and K. Danzmann, “Continuous-wave single-frequency 532 nm laser source emitting 130 W into the fundamental transversal mode,” Opt. Lett. 35(22), 3742–3744 (2010).
[Crossref] [PubMed]

2009 (1)

2008 (1)

2007 (1)

A. Jechow and R. Menzel, “Efficient blue light generation by frequency doubling of a broad-area diode laser in a compact external cavity,” Appl. Phys. B 89(4), 507–511 (2007).
[Crossref]

2006 (1)

H. K. Nguyen, M. H. Hu, N. Nishiyama, N. J. Visovsky, Y. Li, K. Song, X. Liu, J. Gollier, L. C. Hughes, R. Bhat, and C.-E. Zah, “107-mW low-noise green-light emission by frequency doubling of a reliable 1060 nm DFB semiconductor laser diode,” IEEE Photon. Technol. Lett. 18(5), 682–684 (2006).
[Crossref]

2005 (1)

A. Knauer, G. Erbert, R. Staske, B. Sumpf, H. Wenzel, and M. Weyers, “High-power 808-nm lasers with a super-large optical cavity,” Semicond. Sci. Technol. 20(6), 621–624 (2005).
[Crossref]

2000 (1)

X. G. Sun, G. W. Switzer, and J. L. Carlsten, “Blue light generation in an external ring cavity using both cavity and grating feedback,” Appl. Phys. Lett. 76(8), 955–957 (2000).
[Crossref]

1994 (1)

W. J. Kozlovsky, W. P. Risk, W. Lenth, B. G. Kim, G. L. Bona, H. Jaeckel, and D. J. Webb, “Blue light generation by resonator-enhanced frequency-doubling of an extended-cavity diode laser,” Appl. Phys. Lett. 65(5), 525–527 (1994).
[Crossref]

Andersen, P. E.

Andersson-Engels, S.

Bhat, R.

H. K. Nguyen, M. H. Hu, N. Nishiyama, N. J. Visovsky, Y. Li, K. Song, X. Liu, J. Gollier, L. C. Hughes, R. Bhat, and C.-E. Zah, “107-mW low-noise green-light emission by frequency doubling of a reliable 1060 nm DFB semiconductor laser diode,” IEEE Photon. Technol. Lett. 18(5), 682–684 (2006).
[Crossref]

Bona, G. L.

W. J. Kozlovsky, W. P. Risk, W. Lenth, B. G. Kim, G. L. Bona, H. Jaeckel, and D. J. Webb, “Blue light generation by resonator-enhanced frequency-doubling of an extended-cavity diode laser,” Appl. Phys. Lett. 65(5), 525–527 (1994).
[Crossref]

Carlsten, J. L.

X. G. Sun, G. W. Switzer, and J. L. Carlsten, “Blue light generation in an external ring cavity using both cavity and grating feedback,” Appl. Phys. Lett. 76(8), 955–957 (2000).
[Crossref]

Danzmann, K.

Erbert, G.

A. Müller, O. B. Jensen, K. H. Hasler, B. Sumpf, G. Erbert, P. E. Andersen, and P. M. Petersen, “Efficient concept for generation of diffraction-limited green light by sum-frequency generation of spectrally combined tapered diode lasers,” Opt. Lett. 37(18), 3753–3755 (2012).
[Crossref] [PubMed]

O. B. Jensen, B. Sumpf, G. Erbert, and P. M. Petersen, “Widely tunable high-power tapered diode laser at 1060 nm,” IEEE Photon. Technol. Lett. 23(21), 1624–1626 (2011).
[Crossref]

A. Jechow, R. Menzel, K. Paschke, and G. Erbert, “Blue-green light generation using high brilliance edge emitting diode lasers,” Laser Photonics Rev. 4(5), 633–655 (2010).
[Crossref]

D. Skoczowsky, A. Jechow, R. Menzel, K. Paschke, and G. Erbert, “Efficient second-harmonic generation using a semiconductor tapered amplifier in a coupled ring-resonator geometry,” Opt. Lett. 35(2), 232–234 (2010).
[Crossref] [PubMed]

O. B. Jensen, P. E. Andersen, B. Sumpf, K.-H. Hasler, G. Erbert, and P. M. Petersen, “1.5 W green light generation by single-pass second harmonic generation of a single-frequency tapered diode laser,” Opt. Express 17(8), 6532–6539 (2009).
[Crossref] [PubMed]

J. H. Lundeman, O. B. Jensen, P. E. Andersen, S. Andersson-Engels, B. Sumpf, G. Erbert, and P. M. Petersen, “High power 404 nm source based on second harmonic generation in PPKTP of a tapered external feedback diode laser,” Opt. Express 16(4), 2486–2493 (2008).
[Crossref] [PubMed]

A. Knauer, G. Erbert, R. Staske, B. Sumpf, H. Wenzel, and M. Weyers, “High-power 808-nm lasers with a super-large optical cavity,” Semicond. Sci. Technol. 20(6), 621–624 (2005).
[Crossref]

Gollier, J.

H. K. Nguyen, M. H. Hu, N. Nishiyama, N. J. Visovsky, Y. Li, K. Song, X. Liu, J. Gollier, L. C. Hughes, R. Bhat, and C.-E. Zah, “107-mW low-noise green-light emission by frequency doubling of a reliable 1060 nm DFB semiconductor laser diode,” IEEE Photon. Technol. Lett. 18(5), 682–684 (2006).
[Crossref]

Hasler, K. H.

Hasler, K.-H.

Hu, M. H.

H. K. Nguyen, M. H. Hu, N. Nishiyama, N. J. Visovsky, Y. Li, K. Song, X. Liu, J. Gollier, L. C. Hughes, R. Bhat, and C.-E. Zah, “107-mW low-noise green-light emission by frequency doubling of a reliable 1060 nm DFB semiconductor laser diode,” IEEE Photon. Technol. Lett. 18(5), 682–684 (2006).
[Crossref]

Hughes, L. C.

H. K. Nguyen, M. H. Hu, N. Nishiyama, N. J. Visovsky, Y. Li, K. Song, X. Liu, J. Gollier, L. C. Hughes, R. Bhat, and C.-E. Zah, “107-mW low-noise green-light emission by frequency doubling of a reliable 1060 nm DFB semiconductor laser diode,” IEEE Photon. Technol. Lett. 18(5), 682–684 (2006).
[Crossref]

Jaeckel, H.

W. J. Kozlovsky, W. P. Risk, W. Lenth, B. G. Kim, G. L. Bona, H. Jaeckel, and D. J. Webb, “Blue light generation by resonator-enhanced frequency-doubling of an extended-cavity diode laser,” Appl. Phys. Lett. 65(5), 525–527 (1994).
[Crossref]

Jechow, A.

D. Skoczowsky, A. Jechow, R. Menzel, K. Paschke, and G. Erbert, “Efficient second-harmonic generation using a semiconductor tapered amplifier in a coupled ring-resonator geometry,” Opt. Lett. 35(2), 232–234 (2010).
[Crossref] [PubMed]

A. Jechow, R. Menzel, K. Paschke, and G. Erbert, “Blue-green light generation using high brilliance edge emitting diode lasers,” Laser Photonics Rev. 4(5), 633–655 (2010).
[Crossref]

D. Skoczowsky, A. Jechow, H. Stürmer, T. Poßner, J. Sacher, and R. Menzel, “Quasi monolithic ring resonator for efficient frequency doubling of an external cavity diode laser,” Appl. Phys. B 98(4), 751–757 (2010).
[Crossref]

A. Jechow and R. Menzel, “Efficient blue light generation by frequency doubling of a broad-area diode laser in a compact external cavity,” Appl. Phys. B 89(4), 507–511 (2007).
[Crossref]

Jensen, O. B.

Kim, B. G.

W. J. Kozlovsky, W. P. Risk, W. Lenth, B. G. Kim, G. L. Bona, H. Jaeckel, and D. J. Webb, “Blue light generation by resonator-enhanced frequency-doubling of an extended-cavity diode laser,” Appl. Phys. Lett. 65(5), 525–527 (1994).
[Crossref]

Knauer, A.

A. Knauer, G. Erbert, R. Staske, B. Sumpf, H. Wenzel, and M. Weyers, “High-power 808-nm lasers with a super-large optical cavity,” Semicond. Sci. Technol. 20(6), 621–624 (2005).
[Crossref]

Kozlovsky, W. J.

W. J. Kozlovsky, W. P. Risk, W. Lenth, B. G. Kim, G. L. Bona, H. Jaeckel, and D. J. Webb, “Blue light generation by resonator-enhanced frequency-doubling of an extended-cavity diode laser,” Appl. Phys. Lett. 65(5), 525–527 (1994).
[Crossref]

Lenth, W.

W. J. Kozlovsky, W. P. Risk, W. Lenth, B. G. Kim, G. L. Bona, H. Jaeckel, and D. J. Webb, “Blue light generation by resonator-enhanced frequency-doubling of an extended-cavity diode laser,” Appl. Phys. Lett. 65(5), 525–527 (1994).
[Crossref]

Li, Y.

H. K. Nguyen, M. H. Hu, N. Nishiyama, N. J. Visovsky, Y. Li, K. Song, X. Liu, J. Gollier, L. C. Hughes, R. Bhat, and C.-E. Zah, “107-mW low-noise green-light emission by frequency doubling of a reliable 1060 nm DFB semiconductor laser diode,” IEEE Photon. Technol. Lett. 18(5), 682–684 (2006).
[Crossref]

Liu, X.

H. K. Nguyen, M. H. Hu, N. Nishiyama, N. J. Visovsky, Y. Li, K. Song, X. Liu, J. Gollier, L. C. Hughes, R. Bhat, and C.-E. Zah, “107-mW low-noise green-light emission by frequency doubling of a reliable 1060 nm DFB semiconductor laser diode,” IEEE Photon. Technol. Lett. 18(5), 682–684 (2006).
[Crossref]

Lundeman, J. H.

Meier, T.

Menzel, R.

D. Skoczowsky, A. Jechow, R. Menzel, K. Paschke, and G. Erbert, “Efficient second-harmonic generation using a semiconductor tapered amplifier in a coupled ring-resonator geometry,” Opt. Lett. 35(2), 232–234 (2010).
[Crossref] [PubMed]

A. Jechow, R. Menzel, K. Paschke, and G. Erbert, “Blue-green light generation using high brilliance edge emitting diode lasers,” Laser Photonics Rev. 4(5), 633–655 (2010).
[Crossref]

D. Skoczowsky, A. Jechow, H. Stürmer, T. Poßner, J. Sacher, and R. Menzel, “Quasi monolithic ring resonator for efficient frequency doubling of an external cavity diode laser,” Appl. Phys. B 98(4), 751–757 (2010).
[Crossref]

A. Jechow and R. Menzel, “Efficient blue light generation by frequency doubling of a broad-area diode laser in a compact external cavity,” Appl. Phys. B 89(4), 507–511 (2007).
[Crossref]

Müller, A.

Nguyen, H. K.

H. K. Nguyen, M. H. Hu, N. Nishiyama, N. J. Visovsky, Y. Li, K. Song, X. Liu, J. Gollier, L. C. Hughes, R. Bhat, and C.-E. Zah, “107-mW low-noise green-light emission by frequency doubling of a reliable 1060 nm DFB semiconductor laser diode,” IEEE Photon. Technol. Lett. 18(5), 682–684 (2006).
[Crossref]

Nishiyama, N.

H. K. Nguyen, M. H. Hu, N. Nishiyama, N. J. Visovsky, Y. Li, K. Song, X. Liu, J. Gollier, L. C. Hughes, R. Bhat, and C.-E. Zah, “107-mW low-noise green-light emission by frequency doubling of a reliable 1060 nm DFB semiconductor laser diode,” IEEE Photon. Technol. Lett. 18(5), 682–684 (2006).
[Crossref]

Paschke, K.

A. Jechow, R. Menzel, K. Paschke, and G. Erbert, “Blue-green light generation using high brilliance edge emitting diode lasers,” Laser Photonics Rev. 4(5), 633–655 (2010).
[Crossref]

D. Skoczowsky, A. Jechow, R. Menzel, K. Paschke, and G. Erbert, “Efficient second-harmonic generation using a semiconductor tapered amplifier in a coupled ring-resonator geometry,” Opt. Lett. 35(2), 232–234 (2010).
[Crossref] [PubMed]

Petersen, P. M.

Poßner, T.

D. Skoczowsky, A. Jechow, H. Stürmer, T. Poßner, J. Sacher, and R. Menzel, “Quasi monolithic ring resonator for efficient frequency doubling of an external cavity diode laser,” Appl. Phys. B 98(4), 751–757 (2010).
[Crossref]

Risk, W. P.

W. J. Kozlovsky, W. P. Risk, W. Lenth, B. G. Kim, G. L. Bona, H. Jaeckel, and D. J. Webb, “Blue light generation by resonator-enhanced frequency-doubling of an extended-cavity diode laser,” Appl. Phys. Lett. 65(5), 525–527 (1994).
[Crossref]

Sacher, J.

D. Skoczowsky, A. Jechow, H. Stürmer, T. Poßner, J. Sacher, and R. Menzel, “Quasi monolithic ring resonator for efficient frequency doubling of an external cavity diode laser,” Appl. Phys. B 98(4), 751–757 (2010).
[Crossref]

Skoczowsky, D.

D. Skoczowsky, A. Jechow, H. Stürmer, T. Poßner, J. Sacher, and R. Menzel, “Quasi monolithic ring resonator for efficient frequency doubling of an external cavity diode laser,” Appl. Phys. B 98(4), 751–757 (2010).
[Crossref]

D. Skoczowsky, A. Jechow, R. Menzel, K. Paschke, and G. Erbert, “Efficient second-harmonic generation using a semiconductor tapered amplifier in a coupled ring-resonator geometry,” Opt. Lett. 35(2), 232–234 (2010).
[Crossref] [PubMed]

Song, K.

H. K. Nguyen, M. H. Hu, N. Nishiyama, N. J. Visovsky, Y. Li, K. Song, X. Liu, J. Gollier, L. C. Hughes, R. Bhat, and C.-E. Zah, “107-mW low-noise green-light emission by frequency doubling of a reliable 1060 nm DFB semiconductor laser diode,” IEEE Photon. Technol. Lett. 18(5), 682–684 (2006).
[Crossref]

Staske, R.

A. Knauer, G. Erbert, R. Staske, B. Sumpf, H. Wenzel, and M. Weyers, “High-power 808-nm lasers with a super-large optical cavity,” Semicond. Sci. Technol. 20(6), 621–624 (2005).
[Crossref]

Stürmer, H.

D. Skoczowsky, A. Jechow, H. Stürmer, T. Poßner, J. Sacher, and R. Menzel, “Quasi monolithic ring resonator for efficient frequency doubling of an external cavity diode laser,” Appl. Phys. B 98(4), 751–757 (2010).
[Crossref]

Sumpf, B.

Sun, X. G.

X. G. Sun, G. W. Switzer, and J. L. Carlsten, “Blue light generation in an external ring cavity using both cavity and grating feedback,” Appl. Phys. Lett. 76(8), 955–957 (2000).
[Crossref]

Switzer, G. W.

X. G. Sun, G. W. Switzer, and J. L. Carlsten, “Blue light generation in an external ring cavity using both cavity and grating feedback,” Appl. Phys. Lett. 76(8), 955–957 (2000).
[Crossref]

Visovsky, N. J.

H. K. Nguyen, M. H. Hu, N. Nishiyama, N. J. Visovsky, Y. Li, K. Song, X. Liu, J. Gollier, L. C. Hughes, R. Bhat, and C.-E. Zah, “107-mW low-noise green-light emission by frequency doubling of a reliable 1060 nm DFB semiconductor laser diode,” IEEE Photon. Technol. Lett. 18(5), 682–684 (2006).
[Crossref]

Webb, D. J.

W. J. Kozlovsky, W. P. Risk, W. Lenth, B. G. Kim, G. L. Bona, H. Jaeckel, and D. J. Webb, “Blue light generation by resonator-enhanced frequency-doubling of an extended-cavity diode laser,” Appl. Phys. Lett. 65(5), 525–527 (1994).
[Crossref]

Wenzel, H.

A. Knauer, G. Erbert, R. Staske, B. Sumpf, H. Wenzel, and M. Weyers, “High-power 808-nm lasers with a super-large optical cavity,” Semicond. Sci. Technol. 20(6), 621–624 (2005).
[Crossref]

Weyers, M.

A. Knauer, G. Erbert, R. Staske, B. Sumpf, H. Wenzel, and M. Weyers, “High-power 808-nm lasers with a super-large optical cavity,” Semicond. Sci. Technol. 20(6), 621–624 (2005).
[Crossref]

Willke, B.

Zah, C.-E.

H. K. Nguyen, M. H. Hu, N. Nishiyama, N. J. Visovsky, Y. Li, K. Song, X. Liu, J. Gollier, L. C. Hughes, R. Bhat, and C.-E. Zah, “107-mW low-noise green-light emission by frequency doubling of a reliable 1060 nm DFB semiconductor laser diode,” IEEE Photon. Technol. Lett. 18(5), 682–684 (2006).
[Crossref]

Appl. Phys. B (2)

A. Jechow and R. Menzel, “Efficient blue light generation by frequency doubling of a broad-area diode laser in a compact external cavity,” Appl. Phys. B 89(4), 507–511 (2007).
[Crossref]

D. Skoczowsky, A. Jechow, H. Stürmer, T. Poßner, J. Sacher, and R. Menzel, “Quasi monolithic ring resonator for efficient frequency doubling of an external cavity diode laser,” Appl. Phys. B 98(4), 751–757 (2010).
[Crossref]

Appl. Phys. Lett. (2)

W. J. Kozlovsky, W. P. Risk, W. Lenth, B. G. Kim, G. L. Bona, H. Jaeckel, and D. J. Webb, “Blue light generation by resonator-enhanced frequency-doubling of an extended-cavity diode laser,” Appl. Phys. Lett. 65(5), 525–527 (1994).
[Crossref]

X. G. Sun, G. W. Switzer, and J. L. Carlsten, “Blue light generation in an external ring cavity using both cavity and grating feedback,” Appl. Phys. Lett. 76(8), 955–957 (2000).
[Crossref]

IEEE Photon. Technol. Lett. (2)

O. B. Jensen, B. Sumpf, G. Erbert, and P. M. Petersen, “Widely tunable high-power tapered diode laser at 1060 nm,” IEEE Photon. Technol. Lett. 23(21), 1624–1626 (2011).
[Crossref]

H. K. Nguyen, M. H. Hu, N. Nishiyama, N. J. Visovsky, Y. Li, K. Song, X. Liu, J. Gollier, L. C. Hughes, R. Bhat, and C.-E. Zah, “107-mW low-noise green-light emission by frequency doubling of a reliable 1060 nm DFB semiconductor laser diode,” IEEE Photon. Technol. Lett. 18(5), 682–684 (2006).
[Crossref]

Laser Photonics Rev. (1)

A. Jechow, R. Menzel, K. Paschke, and G. Erbert, “Blue-green light generation using high brilliance edge emitting diode lasers,” Laser Photonics Rev. 4(5), 633–655 (2010).
[Crossref]

Opt. Express (2)

Opt. Lett. (3)

Semicond. Sci. Technol. (1)

A. Knauer, G. Erbert, R. Staske, B. Sumpf, H. Wenzel, and M. Weyers, “High-power 808-nm lasers with a super-large optical cavity,” Semicond. Sci. Technol. 20(6), 621–624 (2005).
[Crossref]

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Figures (5)

Fig. 1
Fig. 1 Schematic layout of the coupled ring cavity setup.

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Fig. 2
Fig. 2 (A) Example spectrum of the laser at 1064 nm. (B) Power-current characteristics for the external cavity tapered diode laser at different wavelengths within the tuning range.

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Fig. 3
Fig. 3 (a) Generated second harmonic power (squares) as function of injection current to the tapered amplifier. The corresponding circulating fundamental power is also shown (dots). (b) Second harmonic power versus circulating fundamental power. The solid line is a fit to the measured values (squares).

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Fig. 4
Fig. 4 (a) Measured spectrum of the second harmonic light. The inset shows a FPI trace of the green light. (b) Tuning characteristics of the second harmonic wavelength with PPMgLN temperature. The black squares show wavelength and the red dots show the output power.

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Fig. 5
Fig. 5 Beam profiles of the generated second harmonic beam in the horizontal (solid line) and vertical direction (dashed line). The profiles are offset for clarity.

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