脈沖激光(LASER)電源性能主要指標(target aim)

激光電源是激光器配件的能源(解釋:向自然界提供能量轉化的物質(zhì))，它向激光器配件提供泵浦(pump)能量，控制(control)激光輸出強弱和重復(repeat)頻率(frequency)。半導激光配件，這類(lèi)激光器配件是以一定的半導體材料作工作物質(zhì)而產(chǎn)生受激發(fā)射作用，其原理是通過(guò)一定的激勵方式(電注入、光泵或高能電子束注入)，在半導體物質(zhì)的能帶之間或能帶與雜質(zhì)能級之間，通過(guò)激發(fā)非平衡載流子而實(shí)現粒子數反轉，從而產(chǎn)生光的受激發(fā)射作用。固體激光配件，這類(lèi)激光器配件所采用的工作物質(zhì)，是通過(guò)把能夠產(chǎn)生受激輻射作用的金屬離子摻入晶體或玻璃基質(zhì)中構成發(fā)光中心而制成的。因此，激光電源是激光器配件必不可少的重要組成部分。早期的脈沖激光電源，如諧振充電型或LC恒流充電型激光電源，都是用工頻交流變壓(氣壓變量)器進(jìn)行升壓，并 實(shí)現對電網(wǎng)的隔離。由于工頻交流變壓器(Transformer)體大笨重，人們從七十年代開(kāi)始研制開(kāi) 關(guān)型電源。它是將工頻交流整流成直流，再用開(kāi)關(guān)功率(指物體在單位時(shí)間內所做的功的多少)變換方法，將直流逆變成 高頻(Induction Heating)交流，通過(guò)高頻變壓器進(jìn)行升壓，與電網(wǎng)隔離之后進(jìn)行整流，給儲能電容器 充電，最后經(jīng)氙(xian)燈放電給激光器配件提供泵浦能量。由于高頻變壓器的體積(volume)和重量遠 小于同等容量的工頻變壓器，因此，整個(gè)激光電源的體積和重量大大減小。同時(shí)，由于頻率的提高，每周期給儲能電容器充電少，通過(guò)充電電壓的控制，使充電電壓實(shí)現穩定(解釋:穩固安定;沒(méi)有變動(dòng))可調，從而大大提高了激光輸出的穩定性(The stability of)。

脈沖激光電源性能主要指標：

1、每次脈沖能量 如：25J。固體激光配件，這類(lèi)激光器配件所采用的工作物質(zhì)，是通過(guò)把能夠產(chǎn)生受激輻射作用的金屬離子摻入晶體或玻璃基質(zhì)中構成發(fā)光中心而制成的。半導激光配件，這類(lèi)激光器配件是以一定的半導體材料作工作物質(zhì)而產(chǎn)生受激發(fā)射作用，其原理是通過(guò)一定的激勵方式(電注入、光泵或高能電子束注入)，在半導體物質(zhì)的能帶之間或能帶與雜質(zhì)能級之間，通過(guò)激發(fā)非平衡載流子而實(shí)現粒子數反轉，從而產(chǎn)生光的受激發(fā)射作用。

2、脈沖重復頻率可調 如：最大為40Hz，

3、額定輸出功率(指物體在單位時(shí)間內所做的功的多少) 如：l000W。氣體激光配件，它們所采用的工作物質(zhì)是氣體，并且根據氣體中真正產(chǎn)生受激發(fā)射作用之工作粒子性質(zhì)的不同，而進(jìn)一步區分為原子氣體激光器配件、離子氣體激光器配件、分子氣體激光器配件、準分子氣體激光器配件等。

4、輸出激光能量穩定度 如：大于95%，

5、輸出激光延時(shí)穩定度 如：±1μs。

Main performance indicators of pulsed laser (LASER) power supply (target aim)

Laser power supply is the energy source of laser accessories (interpretation: to provide the substance of energy conversion to nature), it provides pump energy to laser accessories, and controls the intensity and repeat frequency of laser output. Semiconductor laser fittings, which are stimulated by a certain semiconductor material as working material, are based on the principle of exciting unbalanced carriers between the energy bands of semiconductor materials or between the energy bands and impurity levels through a certain excitation mode (electric injection, optical pump or high-energy electron beam injection). In order to generate the stimulated emission of light, the inversion of particle number is realized. Solid-state laser accessories, the working substance used in such laser accessories, are made by incorporating metal ions capable of generating stimulated radiation into crystals or glass substrates to form luminescent centers. Therefore, laser power supply is an essential part of laser accessories. Early pulsed laser power supply, such as resonant charging or LC constant current charging, used power frequency AC voltage converter (pneumatic variable) to boost voltage and isolate the power grid. Since the power frequency AC transformer (Transformer) is bulky, switching power supply has been developed since the 1970s. It converts power frequency AC rectifier into DC, then converts DC into Induction Heating by switching power (referring to the amount of work done in a unit time). It boosts voltage through high frequency transformer, rectifies after isolation from power grid, charges energy storage capacitor, and finally discharges Xenon lamp. The pump power is supplied to the laser accessories. Because the volume and weight of the high frequency transformer are much smaller than that of the power frequency transformer with the same capacity, the volume and weight of the whole laser power supply are greatly reduced. At the same time, due to the increase of frequency, the storage capacitor is charged less every cycle. Through the control of charging voltage, the charging voltage can be adjusted stably, which greatly improves the stability of laser output.

Main performance indexes of pulsed laser power supply:

1, each pulse energy is 25J. Solid-state laser accessories, the working substance used in such laser accessories, are made by incorporating metal ions capable of generating stimulated radiation into crystals or glass substrates to form luminescent centers. Semiconductor laser fittings, which are stimulated by a certain semiconductor material as working material, are based on the principle of exciting unbalanced carriers between the energy bands of semiconductor materials or between the energy bands and impurity levels through a certain excitation mode (electric injection, optical pump or high-energy electron beam injection). In order to generate the stimulated emission of light, the inversion of particle number is realized.

2. The pulse repetition frequency can be adjusted as follows: the maximum is 40Hz.

3, rated output power (refers to the amount of work done in a unit time): l000W. Gas laser parts, which use gas as their working substance, can be further divided into atomic gas laser parts, ion gas laser parts, molecular gas laser parts, excimer gas laser parts and so on according to the different properties of working particles which actually produce stimulated emission in gas.

4, output laser energy stability, such as: greater than 95%.

5, the output laser delay stability is as high as: 1 s.

聊城經(jīng)濟開(kāi)發(fā)區杰刻激光設備有限公司