论文信息 - High-power, low-divergence, linear array of quasi-diffraction-limited beams supplied by tapered diodes.

High-power, low-divergence, linear array of quasi-diffraction-limited beams supplied by tapered diodes.

We describe for the first time to our knowledge the performance for a linear array of tapered laser diodes with both fast- and slow-axis collimation using a microlens for fast-axis collimation and a laser-written phase plate for slow-axis collimation and correction of the residual fast-axis errors from lens aberrations, thermal lensing, astigmatism, pointing errors, and other wavefront distortions. The phase plate leads to M(2) factor reductions of 1.5 for the lensed array following the fast axis and 2.6 for the whole bar following the slow axis.

[1] Michel Calligaro,et al. High brightness GaInAs/(Al)GaAs quantum-dot tapered lasers at 980 nm with high wavelength stability , 2004 .

[2] Krzysztof M Nowak,et al. Efficient laser polishing of silica micro-optic components. , 2006, Applied optics.

[3] B. Sumpf,et al. Reliable 1-W CW operation of high-brightness tapered diode lasers at 735 nm , 2004, IEEE Photonics Technology Letters.

[4] D. Garbuzov,et al. High-power 0.8 mu m InGaAsP-GaAs SCH SQW lasers , 1991 .

[5] B. Sumpf,et al. Nearly-diffraction limited 980 nm tapered diode lasers with an output power of 6.7 W , 2004, 2004 IEEE 19th International Semiconductor Laser Conference, 2004. Conference Digest..

[6] Michel Calligaro,et al. 1 W high brightness index guided tapered laser at 980 nm using Al-free active region materials , 2003 .

[7] J. N. Walpole,et al. Semiconductor amplifiers and lasers with tapered gain regions , 1996 .

[8] J. F. Monjardin,et al. Brightness improvement for micro-lensed, laser diode bar stacks , 2003, 2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666).

[9] W. Southwell. Wave-front estimation from wave-front slope measurements , 1980 .

[10] D R Hall,et al. Correction of beam errors in high power laser diode bars and stacks. , 2006, Optics express.

[11] H. Baker,et al. Effect of vaporization and melt ejection on laser machining of silica glass micro-optical components. , 2002, Applied optics.