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第10届国际超快现象会议于1996年5月28—31日在美国加州圣地亚哥举行,来自各国的专家学者300多人与会。本文以“超快现象的真实世界”为题,有两个意义:一是指近两年超快现象研究和应用有丰硕成果;二是指超快激光技术和超快现象研究在面向实际应用、面向社会需要方面有长足的进步,展现了超快现象的真实世界。具体说来,有下述特色。1 全固体化、小型化的飞秒激光器日臻成熟及商品化,为飞秒技术的应用和发展开创了新的天地自1991年自锁模Ti宝石激光器出现以来,固体飞秒激光技术日新月异。在上次国际超快现象会议期间(1994),人们把精力放在产生短的飞秒脉冲方面,曾报道过由自锁模钛宝石激光器获得8.5 fs的最短记录。当时有人预期会获得4 fs.本次会议表明,脉冲压缩方面没有较大的进展,会上报道的最短脉冲是7.5 fs,但是在飞秒激光的全固化小型化方面却有较大的进展。美国贝尔实验室在会议上介绍了一种半导体二极管激光器泵浦Cr:LiSAF飞秒激光器,
The 10th International Superfast Symposium was held on May 28-31, 1996 in San Diego, California, and more than 300 experts and scholars from various countries attended the conference. In this paper, “the real world of ultra-fast phenomenon ” as the theme, has two meanings: First, the rapid ultra-fast phenomenon in recent years, research and application of fruitful results; Second, refers to the ultra-fast laser technology and ultrafast phenomenon in the Practical applications, social needs have made great strides, showing the real world of ultra-fast phenomenon. Specifically, there are the following characteristics. 1 Full-fledged, miniaturized femtosecond laser is becoming mature and commercialized, opening up a new world for the application and development of femtosecond technology Since 1991, self-mode-locked Ti gem laser appeared, the technology of solid femtosecond laser is changing rapidly. During the last International Ultrafast Symposium (1994), people focused on generating short femtosecond pulses and reported the shortest recording of 8.5 fs obtained from a self-locking Ti-sapphire laser. At that time, it was expected that 4 fs would be obtained. This meeting showed that there was not much progress in pulse compression and the shortest pulse reported was 7.5 fs. However, there has been much progress in the miniaturization of all-solid-state femtosecond laser. At the meeting, Bell Laboratories of the United States introduced a kind of semiconductor diode laser pumping Cr: LiSAF femtosecond laser,