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mode locked adj.鎖模的(指鐳射器調整了光相位,能產生極短暫脈沖的...

model

This paper mainly discusses the designing and testing method to the dds acousto - optic mode locking . it also makes some further analysis on the critical technology - - - - - - the transducer acoustical membrane matching and transducer thinning , which can directly affect the performance of acousto - optic elements . it then analyses the heat effect of acousto - optic elements and the technology of transducer thinning by developing ion - beam sputtering of high frequency acousto - optic elements 本文重點討論了dds聲光鎖模器的設計及測試方法,討論和分析了影響聲光器件性能的關鍵工藝換能器聲學膜層匹配和換能器減薄工藝,對聲光器件的熱效應進行了測試分析,對離子刻蝕法聲光換能器減薄新工藝作了一定的探討。

There has been a revolutionary advance in ultrashort pulse technology since the discovery of self - mode locking of ti : sapphire lasers . few - femtosecond pulses have already been generated from ti : sapphire lasers , by means of combining self - phase modulation with negative group velocity dispersion , which is similar to the way of soliton generation 鈦寶石激光自鎖模的發現使得超短脈沖技術發生了革命性的變化,利用自相位調制和負群速度色散結合的類孤子產生方式,人們已經在鈦寶石鎖模激光器上得到了脈寬只有幾個飛秒的光脈沖。

It is discoverde that with a looped feedback circuit , the dds acousto - optic mode locking has the function of tracking the frequency interval of the laser resonator longitudinal mode , and stabilizing the quality of the laser beams Dds聲光鎖模器在增加閉環反饋環路后,可以跟蹤激光諧振腔縱模頻率間隔變化,穩定激光光束輸出質量。

The shared - mode - to - exclusive lock conversion must wait because the exclusive lock for one transaction is not compatible with the shared - mode lock of the other transaction ; a lock wait occurs 共享模式到排他鎖的轉換必須等待一段時間,因為一個事務的排他鎖與其他事務的共享模式鎖不兼容;發生鎖等待。

If two transactions acquire shared - mode locks on a resource and then attempt to update data concurrently , one transaction attempts the lock conversion to an exclusive lock 如果兩個事務獲得了資源上的共享模式鎖,然后試圖同時更新數據,則一個事務嘗試將鎖轉換為排他鎖( x鎖) 。

Because both transactions are converting to exclusive locks , and they are each waiting for the other transaction to release its shared - mode lock , a deadlock occurs 由于兩個事務都要轉換為排他鎖( x鎖) ,并且每個事務都等待另一個事務釋放共享模式鎖,因此發生死鎖。

Luo bin ( optics engineering ) directed by yu xuecai , zong derong based on the laser mode locking principle , this paper focuses on the study of dds acousto - optic mode locker 本文根據鎖模激光原理,進行了dds (直接數字頻率合成器)聲光鎖模器的研制。

4 . at last a theoretically design of the optimizing kerr effect self - mode locking cr ~ : lisaf laser was performed for further research 理論上設計了科爾效應自鎖模cr ~ ( 3 + ) : lisaf激光器,計算出最優化腔參數。

Harmonic mode locking 諧波鎖模