High-Speed Laser Drive System Status and Upgrade Plan
Current status of the fast drive laser system includes a running laser with a 3MHz pulse train and a 5Hz repetition frequency. The system allows for easily achieving pulse lengths up to 200-300s, with potential for longer pulses after extensive tuning. The upgrade plan involves utilizing machine learning processes to automate pulse train optimization, aiming to streamline the manual tuning process and enhance system performance.
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Presentation Transcript
STATUS FOR FAST DRIVE LASER SYSTEM AND UPGRADE PLAN Jinhao Ruan
OUTLINE Current status Long train amplification Upgrade plan
TIME STRUCTURE fmac Intensity Bunch fb Macropulse fmac 1~5Hz fb:3~9MHz
CURRENT STATUS Laser is up running with 3MHz pulse train and 5Hz repetition frequency User interface is set up The longest flat pulse could be easily up to 200~300 s. Some extensive tuning (~3-4 hours) would be needed for 500~600 s long pulse train with lower chargies.
LONGPULSERESULT IR Green UV
LONGTRAINAMPLIFICATIONWITHFINAL AMPLIFIER
ANALITIC MODEL Rate Equation
NEXTSTEP Simulation qualitatively matched to the experiment result However manual tuning is still way too complicated Our plan is to use machine learning process to speed it up. With all the input and output we hope to establish ML model to automatically optimize the pulse train shape with and even without analytical s model help
UPGRADEPLAN Our seed is fiber based very little maintenance needed Final power amplifier is also commercial unit turn key system The middle part is build in house. The main maintenance work needed here. The plan is to replace with fiber system if possible
UPGARDEPLAN Idea comes from Dave s Laser notcher system and also Jonathan s OSC system More detail can be seen from their talk What we would like to get is a fiber-based amplifier system can reach uJ level at 9MHz or even higher Right now they delivered a system can amplify pulse to 30uJ with 250ps pulse with at 7.5MHz. We are about to get a new system will be able to do that at 9MHz with 10ps pulse.
