Directed Electronics AM2 Bedienungsanleitung

FEMTOSECOND TI:SAPPHIRE AMPLIFIERMULTIPASSWedge 50User’s Manual

10 Pulse Picker A pulse picker installed in the Wedge 50 femtosecond amplifier system is used for one pulse selection from a train of stretched puls

11 Nd:Y Power SupplyLF Synchronization electronics unitPhotodiode (to trigger)HV DriverPockels Cellfrom Ti:Sapphire oscillatorPulse picker Optic Bea

12 4. LASER SAFETY Please read next page carefully before you start an installation WARNING ! LASER SAFETY Be very careful executi

13 DANGERVISIBLE AND /OR INVISIBLE LASER RADIATIONAVOID EYE OR SKIN EXPOSURE TO DIRECTOR SCATTERED RADIATIONCLASS IV LASER PRODUCT

14 4. OPTICAL ALIGNMENT Figure 6 shows optical layout of the Wedge 50 amplifier system. Below you will find legends for all optical elements shown i

15 PUMPSEEDM8M9L1Y2Y1BS1to triggerSMVR1M2M3,M4P2P1PCFP0G1G2M1HR1VR2M7BS2M6AM1M5AM2TISY3to pin-diodePMA5A4A1A2 A3OUTINOUTINOUTINFigure 6. Schematic la

16 STRETCHER GRATING ALIGNMENT. 1. Replace the rotation stage with the grating G1. Set position of rotation stage to “0”. 2. With rotation stage set

17 third reflected from the SM beam hits the PM. The reflected from the PM beam hits the SM at the height of 108 cm. The fourth reflecte

18 (PO has been installed at 45o position). Get maximum of the average power. Press the clamp of R. 2. Direct the through F with help of M2. PULSE

19 2. With help of M4 and M5 direct the beam into apertures A4, A5. Remove A4, A5. In case of aligned amplifier go to step 16. Go to step 4 if it is

2 TABLE OF CONTENTS 1. Introduction 2. Principles of operation 3. Laser safety 4. Optical alignment

20 11. Moving narrow paper strip through beams between AM1 and AM2 find common for AM1 and AM2 focal point. 12. With horizontal control

21 5. If not, adjust rotation of the grating about it‟s face for best vertical alignment to the A3 by carefully loosening the retaining screw in

22 height of this stripe requires adjustment, move VR2 in vertical direction by loosening two bolts. 5. The beam should now reflect off the HR1 a fin

23 6. Watch amplification with pin-diode and oscilloscope, slightly moving pump beam with external mirror. 7. Get maximum amplification slightly adju

3 1. INTRODUCTION This manual describes installation and operation of Wedge 50 titanium : sapphire (Ti : sapphire) amplifier system. The system is b

4 After amplification, the picosecond pulses are temporally compressed to 50 - 100 fs pulses (depending on the input pulse duration) by one-grating

5 2. PRINCIPLES OF OPERATION Femtosecond Pulse Stretcher Temporal pulse stretching is required in avoiding the effects of peak power damage in h

6 VR1SMG1PMFigure 2. Femtosecond pulse stretcherINOUT

7 Femtosecond Pulse Compressor The pulse compressor was designed for compression of picosecond pulses amplified by Wedge 50 multipass Ti: sapp

8 VR2HR1G2Figure 3. Femtosecond pulse compressorINOUT

9 outputinputpumpoptic axisM1M2Ti:sapphire crystall Figure 4. Optical schematic of two-mirror confocal multipass Ti : sapphire amplifier