armok 发表于 2017-1-25 23:07:16

leicai05 发表于 2017-1-25 23:50:55

好久没坐老大的沙发了,快过年了,大家都回家了把,哈哈!

lswood 发表于 2017-1-26 00:00:11

光线激光器1000瓦都算小功率了,ipg的1000瓦光线激光器也就30万左右,国产锐科和创新也就20万多。不知道报道里的1000瓦平均功率到底是啥意思,我买的800瓦激光切割机可以连续800瓦输出激光,最厚可以切割8mm钢板。

armok 发表于 2017-1-26 00:16:55

lswood 发表于 2017-1-26 00:41:38

armok 发表于 2017-1-26 00:16
一般国产标800瓦,有200瓦算是良心的了。

标800瓦功率基本是够的,不然切割指标达不到的。买之前对比过,创新800瓦和进口IPG750瓦的切割厚度和速度基本没有差别。毕竟8mm厚的钢板,200瓦穿孔都是问题。

gzhuli 发表于 2017-1-26 00:56:39

lswood 发表于 2017-1-26 00:00
光线激光器1000瓦都算小功率了,ipg的1000瓦光线激光器也就30万左右,国产锐科和创新也就20万多。不知道报 ...
唉,看这种报道还是要看英文的才行,文科记者自己也不懂行,翻译得云里雾里的。

首先这个是高功率脉冲激光器,和里面提到的德州大学1PW激光器和日本LFEX 2PW激光器是同一类型,输出的激光脉冲功率都是PW级,这种激光并不是用来切钢板的,是用于高能物理和新材料研究,其中一个用途是用来做核聚变点火……
然后呢,上面说的那两个激光器一天只能射几次,每次发射的脉冲能量为150~200焦耳,持续时间不到1ps,由于持续时间非常短,所以算出来的峰值功率就很高了,然而其余大部分时间都是在积攒能量,平均功率非常低。
这个耗资4800万美元的新玩具,能以10Hz的频率连续发射每次100焦耳能量的高功率脉冲激光,所以是平均功率1kW的脉冲激光,并非连续的1kW激光。

https://www.afp.com/en/news/2265/brits-czechs-claim-worlds-most-powerful-super-laser

A team of British and Czech scientists on Tuesday said they had successfully tested a "super laser" they claim is 10 times more powerful than any other of its kind on the planet.

The so-called "high peak power laser" has a 1,000-watt average power output, a benchmark of sustained, high-energy pulses.

It has revolutionary potential in engineering, for hardening metal surfaces, processing semiconductors and micro-machining material.

The device was developed by Britain's Central Laser Facility (CLF) and HiLASE (High average power pulsed laser), a Czech state research and development project.

"It is a world record which is important," CLF director John Collier told AFP.

"It is good for putting things on the map, but the more important point is that the underlying technology that has been developed here is going to transform the application of these high power, high energy lasers," Collier added.

Named "Bivoj" after a mythical Czech strongman, the laser is "10 times as powerful" as any other of its type currently in use, HiLASE physicist Martin Divoky told AFP at the testing facility in Dolni Brezany near Prague.

HiLASE director Tomas Mocek told AFP that Bivoj broke the "magical barrier" of 1,000 watts in output on December 16, setting a world record for lasers of its type.

"It's a huge step forward, like an Olympic victory," he added.

Weighing in at around 20 tonnes and costing 44 million euros ($48 million), Bivoj will have applications in the aeronautics, automotive and power sectors, according to the CLF and HiLASE specialists.

Mocek told AFP that Bivoj was fundamentally different from so-called peak power lasers.

There are two behemoths of this kind -- the one-petawatt Texas Petawatt Laser in Austin and the two-petawatt Laser for Fast Ignition Experiments (LFEX) in Osaka, Japan. One petawatt equals one million billion watts

Those lasers "have a very high peak power, but they can only reach it several times a day," Mocek said.

"They do not have so-called 'average power'. This is a combination of the repetition rate and the energy. Our laser has the highest average power, which is important. The repetition rate in Osaka and Austin is significantly lower."

Its creators say they hope to explore the laser's potential during tests planned at the Dolni Brezany facility later this month.

Mocek told AFP that there are also plans to commercialise the laser in the second half of the year.

brother_yan 发表于 2017-1-26 01:10:03

脉冲激光器,一般说峰值功率,重复率,还有脉宽。这个东西第一想到的就是点火~

armok 发表于 2017-1-26 04:19:13

ibmx311 发表于 2017-1-26 07:15:13

脉冲功率和连续功率的概念,好比说一个雷达,脉冲功率10kw,连续功率50w

huangxiaolpbany 发表于 2017-1-26 12:11:35

目前听说功率最大的是35KW的激光器,不是光纤的,日本产,在上海某船厂

sibtck 发表于 2017-1-26 12:44:27

光纤激光器8KW都能国产民用了,但和这个完全不同。光纤激光器的脉冲时间要远远的大于这种,所以难度低的多的多。所以其峰值功率也远远小于这台。脱离了波长,脉冲时间和输出间隔时间来谈平均功率都是个P。。。
这作者应主要谈峰值功率和两次输出的间隔时间,这样就显的超牛逼了。

JAMESKING 发表于 2017-1-26 13:35:20

咕大师果然厉害,英文没错,但国内翻译一塌糊涂,话说连续激光器,恐怕还得氧碘化学激光器才行

lswood 发表于 2017-1-26 15:47:33

我一直认为文科生不适合做记者

XA144F 发表于 2017-1-26 17:24:22

国内不是早就?做出8kw的固体激光器了么?多个级联就可以反导了。

NJ8888 发表于 2017-1-26 21:45:23

lswood 发表于 2017-1-26 15:47
我一直认为文科生不适合做记者

写娱乐八卦

huangqi412 发表于 2017-1-29 16:20:15

文科妓者只能写八卦

dellric 发表于 2017-1-30 14:05:03

娱体记者在八挂新闻无法混日子,改写高端科技文章的后果

cndavy 发表于 2017-2-25 16:00:58

gzhuli 发表于 2017-1-26 00:56
唉,看这种报道还是要看英文的才行,文科记者自己也不懂行,翻译得云里雾里的。

首先这个是高功率脉冲激 ...

GOOGLE 翻译   APP,支持相机中英文互译。
页: [1]
查看完整版本: 世界首台平均输出功率1000瓦的激光研制成功,重20吨,成本4800万美元