Influence of nonlinear effects on the characteristics of pulsed high-power broad-area distributed Bragg reflector lasers
- 126 Downloads
We theoretically analyze the influence of nonlinear effects such as spatial holeburning, two-photon absorption and gain compression on the power–current and beam characteristics of a high-power broad-area distributed Bragg reflector laser with a stripe width of 50 \(\upmu\)m operated in pulsed mode and compare them with simulations of a similar Fabry–Pérot laser. On the one hand, spatial holeburning leads to a higher mean intensity within the cavity for a Fabry–Pérot laser and resulting higher losses in combination with two-photon absorption and gain compression, on the other hand, excitation of higher order lateral modes leads to losses through the Bragg grating. In combination with spatio-temporal power variations resolved by the utilized time-dependent traveling wave model two-photon absorption leads to higher power losses compared to those models using averaged powers.
KeywordsHigh-power lasers Broad-area lasers DBR lasers Traveling wave model Nonlinear effects Spatial holeburning Two-photon absorption Gain compression
This work was supported by the German Federal Ministry of Education and Research contract 13N14026 as part of the EffiLAS/PLuS Project.
- Avrutin, E.A., Ryvkin, B.S.: Theory of direct and indirect effect of two-photon absorption on nonlinear optical losses in high power semiconductor lasers. Semicond. Sci. Technol. 32, 1–11 (2016)Google Scholar
- BALaser: a software tool for simulation of dynamics in broad area semiconductor lasers. http://www.wias-berlin.de/software/balaser/
- Dogan, M., Michael, C.P., Zheng, Y., Zhu, L., Jacob, J.H.: Two photon absorption in high power broad area laser diodes. In: Proceedings of SPIE—High-Power Diode Laser Technology and Applications XII, vol. 8965 (2014)Google Scholar
- Sheik-Bahae, M., Van Stryland, E.W.: Optical nonlinearities in the transparency region of bulk semiconductors. In: Willardson, R.K., Weber, E.R., Garmire, E., Kost, A. (eds.) Nonlinear Optics in Semiconductors I, Semiconductor and Semimetals, vol. 58, pp. 257–318. Elsevier, Amsterdam (1998)CrossRefGoogle Scholar
- Wang, J., Schweizer, H.C.: A quantitative comparison of the classical rate-equation model with the carrier heating model on dynamics of the quantum-well laser: the role of carrier energy relaxation, electron-hole interaction, and auger effect. IEEE J. Quantum Electron. 33(8), 1350–1359 (1997)ADSCrossRefGoogle Scholar