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美國科學家協會編 ; 紀澤長譯. ; Translation of: One world or none. ; Meiguo ke xue jia xie hui bian ; Ji Zechang yi.

In order to decrease the generated heat during pumping laser crystals, and enhance the efficiency of optical coupling with pumped materials,885 nm high power laser diodes with small vertical divergence angle were theoretically designed and fabricated. By means of introducing a grade optical expand layer into cladding layers, and combining optimized design the epitaxy material structure, the vertical divergence angle of devices was effectively decreased. AlGalnAs/AlGaAs quantum wells structure was used to increase the compressive strain, optical gain coefficient was enhanced, and material composition and thickness of quantum wells were optimized theoretically. The epitaxy material was prepared by LP-MOCVD technology, and the standard1 cm laser bar was fabricated. Measured results indicate that the vertical divergence angle of devices is decreased to17.6°, the output power and slope efficiency are20.1 W and1.05 W/A respectively, and the corresponding center wavelength is888.2 nm.

前言 ; Chapter 第一章新世界 ---p.5 ; Chapter 第二章極小世界中的至大力量 ---p.9 ; Chapter 第三章人人有電用 ---p.27 ; Chapter 第四章取用不竭的動力 ---p.43 ; Chapter 第五章新的交通工具 ---p.55 ; Chapter 第六章改造地球的工具 ---p.71 ; Chapter 第七章現代點金石 ---p.77 ; Chapter 第八章世界糧食供應問題 ---p.93 ; Chapter 第九章原子和人類健康 ---p.115 ; Chapter 第十章原子能的工業用途 ---p.131 ; Chapter 第十一章爲科學服務的原子科學 ---p.147 ; Chapter 第十二章展望未來 ---p.161 ; 附錄:術語彙編 ---p.181 ; 馬丁・曼仁著 ; 羅天德譯. ; 譯自: Peacetime uses of atomic energy ; Mading Manren zhu ; Luo Tiande yi. ; Detailed notes in vernacular field only.