这是一个可以在任何桌面或其他表面投射激光的虚拟键盘。
This is a virtual keyboard with laser impressions on any table or other surface.
幸运的是，当今年冬天风暴云聚集的时候，携带激光的研究人员可以首次进行反击。
With luck, as the storm clouds gather this winter, laser-toting researchers could, for the first time, strike back.
这种激光器允许激光的多频率调谐。
激光的射击在大气中产生毫微米大小的微粒。
The laser shots created nanometer-sized particles in the air.
第一束激光的发明—2008年5月16日。
冷激光将冷却原子推入一个存在互相垂直激光的区域。
The cooling lasers propel the chilled atoms gently into a zone where another laser system's beams cross one another.
第一束激光的发明—2008年5月16日。
这项计划就是利用激光的纯度选择性地激发铀的罕见形态。
The plan was to exploit the extraordinary purity of laser light to selectively excite uranium's rare form.
要做到这点，他们需要依靠一种使用原子磁感云以及激光的技术。
To do that, they relied on a technique that used a magnetically sensitive cloud of atoms and a laser.
用来产生光学频率梳的激光的类型对于此频率尺的精度至关重要。
The type of laser used to make the comb is critical to the precision of the ruler.
三年内，单束激光的能量将足以清除所有1至10厘米的太空碎片。
The proposal suggested a single laser facility would be enough to remove all junk of this size in three years.
这颗卫星利用地面对激光的反射，让研究人员以极高的精度测量地形。
The satellite bounces laser light off the ground, allowing researchers to measure the terrain with extraordinary precision.
因为激光束可以长距离运行，所以燃料不必非要靠近制造激光的激光器。
Because laser beams can run for long distances, the fuel does not have to be right next to the lasers that generate them.
研究者使用装备有精密测量激光的显微镜来观察每个稀薄的大脑组织晶片。
Researchers view each hair-thin wafer of brain tissue under a microscope outfitted with a laser for precision dissection.
五十年后，激光的用途遍及天文学、外科手术、DVD播放器到金属切割。
Fifty years later, lasers are a staple in everything from astronomy, surgery and DVD players to cutting sheet metal.
尽管在过去的几十年里无线电功率几乎不变，但是激光的功率则呈指数增长。
Although radio power has changed little over the decades, the power of lasers has grown exponentially.
以原子为例，通过需要通过激光的刺激，把电子推向不同的能量态来表示信息。
In the case of atoms, information is represented by nudging electrons to different energy states, often by exciting them with a laser.
细胞放到位置以后，研究者一步步提高蓝色激光的功率，观察绿色荧光的变化。
With the cell in place, the researchers gradually increased the power of the blue laser and watched how the green fluorescence changed as a result.
他补充说，“既然激光的进步源于国内，所以激光的进步将会促进能源安全。”
The laser advance, he added, will promote energy security “since it is a domestic source.”
这些转换器在被压印到硅玻璃上之后，能改变通过它的超短脉冲激光的偏振方式。
When imprinted on silicon glass, these converters are able to alter the polarization of ultra-short pulses of laser light passing through them.
他强调距离问题可以用增强激光的能量来解决，它比为轨道提供能量更容易解决。
He adds that the distance problem is relatively easy to deal with by increasing the power of the laser, and it is less challenging technically than his proposals to beam power from orbit.
有别于通常用于激发激光的物质，锗元素可以很容易的融入目前广泛使用的硅制芯片。
Unlike the materials typically used in lasers, germanium is easy to incorporate into existing processes for manufacturing silicon chips.
研究者们现在正着手着让他们设备达到最优化，来看看他们的后向激光的强度还能提高多少。
The researchers now plan to optimize their set-up to see how much higher than can raise the gain of their backward laser.
这类密集型激光器更加适用于能源传送，因为这样一来用来搜集激光的电源就可以更小巧了。
Such intense lasers are better suited to power-beaming because the cells that collect the laser light can be smaller.
不过瑕不掩瑜，激光的效率比氙气灯高，因为后者的能量很多以热能的形式散失了。
But that may not matter too much. Lasers are more efficient than xenon lamps, which waste a lot of energy as heat.
激光的发明给科学家们提供了一种强大的光源，同时也是地球上的一种能够产生有效功的推力。
The invention of the laser provided scientists with a stronger source of light and a push that could do useful work on Earth.
激光技术第一次走进日常生活，是美国超市使用发出红色氦氖激光的条形码扫描枪实现收款自动化。
Lasers became an everyday technology when us supermarkets decided to automate their checkouts using barcodes that could be read by a red helium-neon laser built into the counter.
拉曼发现这种激光的散射可以替代X光衍射鉴别化合物。 这个发现也为他赢得了诺贝尔奖。
Raman, who won a Nobel Prize for his discovery, realized that this scattering of light offered an alternative to X-ray diffraction as a means of identifying compounds.
同时理论物理学家们正努力研究激光的性能，以便阐述其量子性，从而在使激光在实验中作更好的应用。
A parallel effort was made by theorists to understand the properties of laser light, to describe its coherence, its classical aspects, and its inherently quantum features.
同时理论物理学家们正努力研究激光的性能，以便阐述其量子性，从而在使激光在实验中作更好的应用。
A parallel effort was made by theorists to understand the properties of laser light, to describe its coherence, its classical aspects, and its inherently quantum features.
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