Abstract

A high-power narrow-linewidth laser system based on a tapered semiconductor optical amplifier in external cavity is demonstrated. The external cavity laser system uses a new tapered amplifier with a super-large optical-cavity (SLOC) design that leads to improved performance of the external cavity diode lasers. The laser system is tunable over a 29 nm range centered at 802 nm. As high as 1.95 W output power is obtained at 803.84 nm, and an output power above 1.5 W is achieved from 793 to 812 nm at operating current of 3.0 A. The emission linewidth is below 0.004 nm and the beam quality factor M2 is below 1.3 over the 29 nm tunable range. As an example of application, the laser system is used as a pump source for the generation of 405 nm blue light by single-pass frequency doubling in a periodically poled KTiOPO4. An output power of 24 mW at 405 nm, corresponding to a conversion efficiency of 0.83%/W is attained.

© 2005 Optical Society of America

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Appl. Phys. B (1)

E. Samsøe, P. M. Petersen, S. Andersson-Engels, and P. E. Andersen, "Second-harmonic generation of 405-nm light using periodically poled KTiOPO4 pumped by external-cavity laser diode with double grating feedback," Appl. Phys. B 80, 861-864 (2005).
[CrossRef]

Appl. Phys. Lett. (4)

A. K. Goyal, P. Gavrilovic, and H. Po, "Stable single-frequency operation of a high-power external cavitytapered diode laser at 780 nm," Appl. Phys. Lett. 71, 1296-1298 (1997).
[CrossRef]

D. M. Cornwell, Jr., and H. Thomas, "High-power (>0.9 W cw) diffraction-limited semiconductor laser based on a fiber Bragg grating external cavity," Appl. Phys. Lett. 70, 694-695 (1997).
[CrossRef]

A. K. Goyal, P. Gavrilovic, and H. Po, "1.35 W of stable single-frequency emission from an external cavity tapered oscillator utilizing fiber Bragg grating feedback," Appl. Phys. Lett. 73, 575-577 (1998).
[CrossRef]

L. Goldberg and M. K. Chun, "Injection locking characteristics of a 1 W broad stripe laser diode," Appl. Phys. Lett. 53, 1900-1902 (1988).
[CrossRef]

C. R. Physique (1)

H. Wenzel, B. Sumpf, and G. Erbert, "High-brightness diode laser," C. R. Physique 4, 649-661 (2003).
[CrossRef]

Electron. Lett. (2)

D. Mehuys, D. Welch, and D. Scifres, "1 W cw, diffraction-limited, tunable external-cavity semiconductor laser," Electron. Lett. 29, 1254-1255 (1993).
[CrossRef]

R. J. Jones, S. Gupta, R. K. Jain, and J. N. Walpole, "Near-diffraction-limited high power (~1 W) single longitudinal mode CW diode laser tunable from 960 to 980 nm," Electron. Lett. 31, 1668-1669 (1995).
[CrossRef]

IEEE J. Quantum Electron. (1)

S. O’Brien, D. F. Welch, R. A. Parke, D. Mehuys, K. Dzurko, R. J. Lang, R. Waarts, and D. Scifres, "Operating characteristics of a high-power monolithically integrated flared amplifier master oscillator power amplifier," IEEE J. Quantum Electron. 29, 2052-2057 (1993).
[CrossRef]

IEEE Photonics Technol. Lett. (3)

S. O’Brien, R. Lang, R. Parke, J. Major, D. F. Welch, and D. Mehuys, "2.2-W continuous-wave diffraction-limited monolithically integrated master oscillator power amplifier at 854 nm," IEEE Photonics Technol. Lett. 9, 440-442 (1997).
[CrossRef]

S. O’Brien, A. Schoenfelder, and R. J. Lang, " 5-W diffraction-limited InGaAs broad-area flared amplifier at 970 nm," IEEE Photonics Technol. Lett. 9, 1217-1219 (1997).
[CrossRef]

D. Mehuys, L. Goldberg, and D. F. Welch, "5.25-W CW near-diffraction-limited tapered-stripe semiconductor optical amplifier," IEEE Photonics Technol. Lett. 5, 1179-1182 (1997).
[CrossRef]

Opt. Express (1)

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, 621-624 (2005).
[CrossRef]

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