PicoEmerald Single-Box Laser System is an easy-to-use and truly hands-free tunable picosecond light source from APE. Ideal for SRS and CARS, offering 3 temporally and spatially overlapped picosecond pulse trains to cover the full fingerprint region and beyond.
With the picoEmerald, all three beams (Signal, Idler and IR pump) are designed to come from one and the same output. They are perfectly overlapping in space and time. Therefore, there is no need for the user to use additional optics to guide the different beams into one location.
Users often want to use the entire wavelength range provided by the IR beam and the Signal and Idler output. Some applications, such as Coherent Raman Spectroscopy, even require the different beams being spatially and temporally overlapped. The difficulty with most laser systems is that IR, Signal and Idler beam come from different outputs. The different beams can therefore not easily be coupled into one and the same experiment. With the common single output port of the picoEmerald, the user has the certainty and comfort of not having to create their own beam path for the individual beams.
The picoEmerald has an integrated delay management (GDD dispersion compensated output). This allows the perfect adjustment of the time delay between the IR and the Signal beam even for external optics, in order to deal with dispersion differences at the different wavelengths. Each time the picoEmerald picosecond laser is tuned to a new Signal wavelength the delay of the IR beam is adjusted automatically for achieving a temporal overlap between Signal and IR pulse either at the output port or at an external experiment position
Main Parameters
| Type of Source | Automated picosecond (narrow-band) tunable light source |
|---|---|
| Wavelength 1 1032 nm Beam | 1032 ± 1.5 nm |
| Wavelength 2 OPO Signal | 700 … 990 nm |
| Wavelength 3 OPO Idler | 1080 … 1950 nm |
| Power 1 1032 nm Beam | > 700 mW (customized versions on request) |
| Power 2 OPO Signal | > 700 mW at 800 nm |
| Power 3 OPO Idler | > 400 mW at 1250 nm |
| ∆ν OPO Signal – OPO Idler | 800 … 9000 cm-1 |
| ∆ν OPO Signal – Fundamental | 400 … 4500 cm-1 |
| Pulse Width | 2 ps (others on request) |
| Repetition Rate | 80 MHz |
| Spectral Bandwidth Signal, 1032 nm beam | 10 cm-1 |
Beam
| Beam Diagnostics | Integrated for Signal Wavelength, Power, Bandwidth, Beam position, Temporal overlap |
|---|---|
| Pointing Stability | < 100 µrad per 100 nm |
| M2 | < 1.2 (OPO Idler and Signal), typ. 1.2 (1032 nm beam) |
| Ellipticity | < 10 % |
| Polarization | Linear; Horizontal > 100:1 |
| Beam Divergence | 1.0 (± 0.2) mrad (at 800 and 1032 nm) |
| Beam Waist Diameter | 1.2 (± 0.2) mm at 800 nm; 1.7 (± 0.2) mm at 1032 nm |
Software
| Software and Automation | Included |
|---|---|
| Wavelength Sweep Function | Start/End Function, User-defined Holding Time, Trigger Function, max. 2 nm step size, approx. 5 s per wavelength step |
| Remote Control | Possible via USB / Ethernet TCP/IP / Serial RS232 |
SRS Modules (Optional)
| SRS Detection Module | Sensor: 10 mm x 10 mm active area; 340 … 1100 nm spectral response Lock-In Amplifier: 8 MHz … 20 MHz; Time constants: 100 ns, 300 ns, 2 µs, 10 µs, 20 µs Typ. Sensitivity: Δ I/I = 5 x 10-7 for 20 μs integration time (at 50 mW / 800 nm) |
|---|---|
| SRS Modulator EOM | EOM with a resonant fixed frequency of 10 MHz (or 20 MHz) modulation frequency; Built into picoEmerald |
Dimensions and Power
| Dimensions | picoEmerald: 945 mm x 360 mm x 470 mm, 98 kg (see drawing for details) Panel PC: 234 mm x 41 mm x 128 mm, 2 kg Laser Control Unit: 19 inch (4 U), 11 kg Chiller: 197 mm x 330 mm x 279 mm, 10 kg |
|---|---|
| Power | 100 … 240 V, 50 … 60 Hz, max. 600 W (Setup incl. PC) 100 … 240 V, 50 … 60 Hz, max. 600 W (Chiller) |
Stimulated Raman spectroscopy (SRS)
Coherent anti-Stokes Raman spectroscopy (CARS)
SRS microscopy of vibrational probes
Second harmonics imaging (SHG)
Pump-probe spectroscopy
Surface enhanced Raman spectroscopy (SERS)
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Photonic Solutions Ltd
Unit 2.2 Quantum Court
Heriot-Watt University Research Park
Edinburgh
EH14 4AP
