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Ultrafast Laser Micro-Machining Tuesday, July 20 Ryan Newson

Ultrafast Laser Micro-Machining Tuesday, July 20 Ryan Newson. Odd Jobs Update Affixed cooler knob Verified previous ThorLabs orders Test Shooting of Regular Al Foil Micromachining Setup Updates Third alignment camera in place 8mm collecting lens setup To Do. Primary Cooler Knob.

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Ultrafast Laser Micro-Machining Tuesday, July 20 Ryan Newson

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  1. Ultrafast Laser Micro-MachiningTuesday, July 20Ryan Newson • Odd Jobs Update • Affixed cooler knob • Verified previous ThorLabs orders • Test Shooting of Regular Al Foil • Micromachining Setup Updates • Third alignment camera in place • 8mm collecting lens setup • To Do

  2. Primary Cooler Knob • Used 12-min apoxy to glue knob onto cooler • Waited few mins so it wouldn’t run down

  3. ThorLabs Website Mistakes • Sometimes ThorLabs website gave incorrect subtotal • Apparently corrected at the “source” • Reviewed previous invoices given to me, all of which seemed to be without error

  4. Micromachining Setup – July 20

  5. Shoot Test Aluminum Foil • Used a sample of commercial “heavy duty” aluminum foil • Used original f=13.8 mm focusing lens & f=30 mm collecting lens • Oscillator operating mainly in higher order mode • Amplifier apparently operating normally

  6. Shoot Test Aluminum Foil cont. ETP off of Al foil: CCD-ETP (diode laser) CCD-ETP (ps laser)

  7. Shoot Test Aluminum Foil cont. Shot #1: CCD-FF CCD-NF CCD-SB CCD-DS

  8. Shoot Test Aluminum Foil cont. Shot #2: CCD-FF CCD-NF CCD-SB CCD-DS

  9. Shoot Test Aluminum Foil cont. Oscillator Only Through: CCD-NF CCD-FF CCD-SB CCD-DS

  10. Shoot Test Aluminum Foil cont. • Used Intel Microscope to take some quick images 200x

  11. Triggering Problems Solved • Have recently setup CCD-FF & CCD-DS to trigger from Twitter’s LabVIEW timing program • Modified CCD-DS’s (Hitachi) macro to auto-save images - works! • Still need to change from every shot to every 8th shot • Setup CCD-FF (PixeLINK) to trigger recently - works! (fixed strange problem - wires reversed) • Still need to tweak timing and auto-save images

  12. Alignment Cameras • Added third alignment camera behind pulse-train selector CCD-MA CCD-MO CCD-MP

  13. Collecting Lens Switch-up • Switched 30 mm collecting lens with 8 mm lens • Beamwaist 3.75X larger, but seems to work… CCD-FF 8mm CCD-FF 30mm CCD-NF 30mm CCD-NF 8mm

  14. Collecting Lens Switch-up cont. 50 um 150 um 750 um CCD-SB pair 1 CCD-SB pair 3 CCD-SB pair 8

  15. “To Do” List • Finalize triggering for CCD-FF & CCD-DS • Run another test on Al foil with all CCD’s • Get oscillator working good as new • Start shooting real Al samples! • Gather papers for review with Santiago

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