GaN基绿光激光二极管发展现状及趋势

Development Status and Trend of GaN-Based Green Laser Diode

由于氮化镓(GaN)基半导体材料在外延生长技术、外延结构设计方面取得了显著的成果,GaN基绿光激光二极管已广泛应用在激光显示、光纤维通讯、生物医疗器件和光数据存储等领域。综述了绿光激光二极管的发展历程及研究现状;重点详述了导致GaN基绿光激光二极管输出功率低、光束质量差及可靠性差等问题的关键因素及解决方法;探讨了绿光波段量子阱的高In组分导致GaN基激光二极管光电性能骤降方面的问题;总结了制备高性能GaN基绿光激光二极管所面临的挑战仍是外延材料质量差、载流子泄漏严重和强极化效应引起的激射效率低等难题。同时,展望了GaN基绿光激光二极管向智能化和模块化方向发展的趋势以及研究重点。

Since the obvious progress of GaN-based semiconductor materials in epitaxial growth and epitaxial structure design,GaN-based green laser diode has been widely used in laser displays,optical fiber communication,biomedical instruments,optical data storage and other fields.The development and research progress of green laser diode were reviewed in this work.The key factors affecting the low output power,poor beam quality and poor reliability of GaN based green laser diodes and their solutions were described in detail.The photoelectric performance droop for GaN-based green laser diode with high In composition in quantum well were discussed.The challenges of achieving high performance green laser diode are poor quality of epitaxied materials,serious carrier leakage and low radiation recombination caused by strong polarization effect were summarized.The research emphasis and the future trend of smarter and more modular of GaN-based green laser diode were prospected.