Photonics
The Photonics Research Laboratory at CRANN, Trinity College Dublin, is an established optical research center and a key technology platform for Ireland.
It combines unique femtosecond laser systems with different repetition rates and tunability from UV to mid-IR, a Raman Spectroscope, Scanning Near-field Optical Microscope and a Fluorescence Lifetime Imaging Microscope. At CRANN we are carrying out research related to nonlinear dynamics, nonlinear optics, ultrafast optics, near-field optics and surface Plasmon resonance.
For more information on the CRANN Photonics Laboratory and related projects please email Prof John Donegan, jdonegan AT tcd.ie.
System Specifications:
CW 532 nm.
80MHz, <130 fs, 700 nm-980 nm.
Pumped 500 mW@ 832 nm, SHG: 70 mW @ 416 nm.
THG: 25 mW@ 277 nm.
80 MHz, <130 fs, 525 nm-750 nm.
80 MHz, <130 fs, 1 050 nm-1600 nm (Signal).
80 MHz, <130 fs, 1600 nm-2600 nm (Idler).
System Specifications:
CW 532 nm.
780 nm-820 nm, <130 fs.
500 mW@800 nm, <130 fs.
White light output.
SHG output, 400 nm, <130 fs.
Signal 480 nm-700 nm, <130 fs.
Idler 933 nm-2300 nm, <130 fs.
Signal 1200 nm-1600 nm, <130 fs
Idler 1600 nm-2400 nm, <130 fs.
2.55 µm to >10 µm.
System Specifications:
780 nm-820 nm, <130 fs.
800nm, Repetition Rates @1 kHz, Pulse Energy >1 mJ.
SNOM:
| Scanning by sample | Scanning by probe | |
|---|---|---|
|
Scan range |
100x100x10 µm |
100x100x7 µm |
|
Non-linearity, XY |
0.1 % (typically) |
<0.15 % |
|
Noise level, Z |
<0.2 nm (typically) |
0.04 nm (typically) |
|
Noise level, XY |
<0.5 nm (typically) |
0.2 nm (typically) |
| Quartz tuning fork base frequency | 190 kHz | |
|
Optical fiber diameter |
90 µm (for 480 nm-550 nm) |
|
|
Aperture diameter |
< 100 nm |
AFM:
| Scanning by sample | Scanning by probe | |
|---|---|---|
| Scan range | 100x100x10 µm | 100x100x10 µm |
| Non-linearity, XY | 0.1 % (typically) | <0.15 % |
| Noise level, Z | <0.04 nm (typically) | 0.06 nm (typically) |
|
Noise level, XY |
<0.2 nm (typically) |
0.1 nm (typically) |