Using unusable frequencies [solid-state terahertz laser].
Semiconductor engineers have an embarrassing secret: a nasty hole in the electromagnetic spectrum that they cannot fill, between about 0.3 THz and 30 THz. The terahertz gap, to give the hole its name, had always eluded them until May 2002, when a consortium of European scientists announced a solid-s...
| 發表在: | IEEE spectrum 39, 7(duplicate) (2002). |
|---|---|
| 主要作者: | |
| 格式: | Article |
| 語言: | English |
| 主題: |