Fibre Lasers for SILIcon testing

The Glaser laser The most common in HEP. Versions in 1060, 980, 660 nm Rise Time <0,5 ns Fall Time <0,5 ns Optical power: <2 mW – 660 nm <1.5 mW 980 nm < 2mW 1060 Focuser: fiber pigtailed focuser with working distance of 12mm. Magnification of one. Example of model: WL of source 1060 nm Working distance : 12 mm Slit Width = 5 micron Correction Factor at 5/20.4 = 0.25 is 0.95 Actual spot diameter : X: 20.7X0.95=19.7 micron Y:20.4X0.95=19.4 micron

standard setup Cost: ~ 30 k€ Particulars – Ljubliana Complete TCT setup. Laser diode wavelength: 660 nm, 1064 nm (optional others) Pulse: 20 to 2000 k electrons pulse width: <350 ps - 4000 ps (tunable) running : pulse: 50 Hz - 1MHz , pattern mode: mHz to 100 kHZ Optics beam spot (FWHM) : <11 microns@1064 nm, <8 microns@660 nm Coupling: fibre coupled size: <12 microns@1064 nm, <8 microns@650 nm moving range: 5 cm x 5 cm x 5cm (x,y,z) resolution: < 1 micron mounting plane: 5 cm x 5 cm Cost: ~ 30 k€

Particulars – Ljubliana Large setup Complete TCT setup. Laser diode wavelength: 660 nm, 1064 nm (optional others) Pulse: 20 to 2000 k electrons pulse width: <350 ps - 4000 ps (tunable) running : pulse: 50 Hz - 1MHz , pattern mode: mHz to 100 kHZ Optics beam spot (FWHM) : <11 microns@1064 nm, <8 microns@660 nm Coupling: fibre coupled size: <12 microns@1064 nm, <8 microns@650 nm moving range: 5 cm x 5 cm x 5cm (x,y,z) resolution: < 1 micron mounting plane: 5 cm x 5 cm

Educational Compact setup Particulars – Ljubliana Complete TCT setup. Laser diode wavelength: 660 nm, 1064 nm (optional others) Pulse: 20 to 2000 k electrons pulse width: <350 ps - 4000 ps (tunable) running : pulse: 50 Hz - 1MHz , pattern mode: mHz to 100 kHZ Optics beam waist ~1 mm Coupling: fibre coupled moving range: 5 cm x 5 cm resolution: < 1 micron mounting plane: 5 cm x 5 cm

Lasers available at Particulars Wavelength ID of the laser 1064 nm,fibre coupled laser FC LA-01 IR FC 980 nm, fibre coupled laser FC LA-01 NIR FC 660 nm, fibre coupled laser FC LA-01 R FC 520 nm, fibre coupled laser FC LA-01 G FC 405 nm, fibre coupled laser FC LA-01 B FC 1310 nm, bare/open diode LA-01 FIR B 1064 nm, bare/open diode LA-01 IR B 935 nm, bare/open diode LA-01 NIR B 640 nm, bare/open diode LA-01 R B 520 nm, bare/open diode LA-01 G B 405 nm, bare/open diode LA-01 B B

Going FEMTO For single photon TCT, pulse energies of about 0.01 pJ are enough 1 pJ ~ 6 Mphotons For Two photon TCT one needs a photon density of 1 per million cubic micron in 100 fs  about 0.2 pJ per pulse @ 1300 nm This requires HNA lenses to focus in small volumes. HNA implies small working distances.

Pulsed femtosecond laser systems TOPTICA 780 nm, 80 MHz < 1 pJ per pulse, 90 fs MENLO 1560/780 nm, 100 MHz < 1 pJ per pulse, 150 fs MENLO 1560/780 nm, 100 MHz < 1 nJ per pulse, 150 fs