English
Picosecond Laser Widely Tunable
Picosecond Laser Tunable, One-box, with Multi-Color Output
Picosecond Laser Tunable
The picosecond laser picoEmerald emits ultra-short pulses with a duration of 2 picoseconds (other durations possible). The wavelength tuning of the ps laser is fully automated across a tuning range of 700 nm to 990 nm (Signal) and 1080 nm to 1950 nm (Idler). The fundamental beam at 1032 nm is also available. A wavelength scan / sweep function for fast spectra acquisition over certain specific wavelengths is included.
The key-facts of the picoEmerald are:
- Wavelength 1 IR beam 1032 nm
- Wavelength 2 tunable 700 nm … 990 nm
- Wavelength 3 tunable 1080 nm … 1950 nm
- Temporal and spatial overlap of the output wavelengths
- Integrated time-delay between the wavelengths
- A common output port for all beams
- Fully automated wavelength tuning
- EOM optionally integrated
picoEmerald provides ultra-short picosecond laser pulses with a pulse repetition rate of 80 MHz.
Faster Achievements with a Single Output Port
With the picosecond laser picoEmerald, Idler and Signal beams and the IR beam (1 µm from the pump laser) 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.
Outstanding Reliability
All optical modules of the tunable picosecond laser picoEmerald were optimized by finite element analysis and mechanical stability algorithms (misalignment stability optimization). This ensures maximum mechanical stability. In addition, active cavity control continuously maximizes the efficiency of the high-performance picosecond laser oscillator and the integrated optical parametric oscillator. The picoEmerald is supplied with an internal closed-loop chiller to ensure stable operation. A panel PC with pre-installed control software and a user interface are part of the delivery. The picoEmerald is designed to be a “hands-free” unit. It is not necessary for the user to interact with the laser except via the software interface.
Narrow Bandwidth with Picosecond Pulses
picoEmerald allows for the efficient generation of tunable narrow-bandwidth pulses. The narrow bandwidth of the picosecond laser compared to femtosecond laser is beneficial to perform resonance-specific and vibrational mode-specific excitation experiments. This is due to the reason that most vibrational bands (or cross-sections) in the spectral region of interest tend to have only a few wave numbers of bandwidth. With a pulse duration of 2 ps, picoEmerald is therefore ideally suited for many spectroscopy applications and experiments.
If even narrower bandwidths are required, the picoEmerald can be combined with a spectrum slicer. The main task of the pulseSlicer from APE is to cut out a very narrow spectral part of the picosecond laser pulse. This function is comparable to a monochromator or bandpass filter.
Options
Several options regarding the configuration of the picosecond laser are available:
- A power version of > 700 mW (at 1032 nm)
- An elevated power version of > 2 W (at 1032 nm)
- A long pulse version with 3.5 ps instead of 2 ps
- An elevated power version of > 2 W (at 1032 nm) with an additional IR output port > 4 W (at 1032 nm)
CARS & SRS
picoEm
erald provides fully automated temporal- and spatial-overlapping ultra-short pulse trains, perfectly suited for CARS & SRS.
Quantum Dot Single-Photon Generation
The combination of the tunable picosecond laser picoEmerald and the spectrum slicer (laser monochomator) pulseSlicer supports customers in the field of quantum research.
Transient Absorption Microscopy
Transient absorption microscopy (TAM) with a tunable multi-color picosecond laser, with two collinear aligned wavelengths.
Application Examples Picosecond Laser
- Stimulated Raman Spectroscopy (SRS) and SRS Microscopy of Vibrational Probes
- Coherent Anti-Stokes Raman Spectroscopy (CARS)
- Second Harmonics Imaging (SHG)
- Transient Absorption Microscopy (TAM)
- Pump-Probe Spectroscopy
- Surface Enhanced Hyper Raman Spectroscopy (SEHRS)
- Quantum Dot Single-Photon and Entangled-Photon Generation
- Ghost Imaging
Specifications
Additional Features
| Laser source | picoEmerald ps |
| Wavelength 1 1032 nm beam | 1032 nm ± 1.5 nm |
| Wavelength 2 OPO Signal | 700 nm … 990 nm |
| Wavelength 3 OPO Idler | 1080 nm … 1950 nm |
| Δ OPO Signal - OPO Idler | 800 cm-1 … 9000 cm-1 |
| Δ OPO Signal - 1032 nm beam | 400 cm-1 … 4500 cm-1 |
| Power 1 1032 nm beam | > 0.7 W (unmodulated) |
| Power 2 OPO Signal | > 0.7 W (at 800 nm) |
| Power 3 OPO Idler | > 0.4 W (at 1250 nm) |
| Spectral bandwidth | ~ 10 cm-1 (OPO Signal and 1032 nm beam) |
| Pulse width | ~ 2 ps (OPO Signal and 1032 nm beam) |
| Repetition rate | 80 MHz ± 0.5 MHz |
| Noise | Shot noise limited (-161 dBc/Hz) > 10 MHz (OPO Signal) |
| Beam | |
| Beam diagnostics | Integrated for 1032 nm beam an OPO Signal: power, spatial and temporal overlap Integrated for OPO Signal only: wavelength, spectral bandwidth |
| OPO Signal pointing stability | < 100 µrad per 100 nm (typ. 100 µrad over entire range) |
| M² | < 1.2 (OPO Signal); typ. 1.2 (1032 nm beam) |
| Ellipticity | < 20 % |
| Polarization | Linear; horizontal > 100:1 |
| Beam divergence | 1.0 mrad ± 0.2 mrad (OPO Signal at 800 nm and 1032 nm) |
| Beam waist diameter | 1.2 mm ± 0.2 mm (OPO Signal at 800 nm) 1.7 mm ± 0.2 mm (1032 nm beam) |
| Features | |
| Power attenuators | Integrated for OPO Signal and 1032 nm beam |
| Wavelength sweep function | Start/End function, user-defined holding time, trigger function Max. step size: 2 nm Tuning speed: ~ 5 s per wavelength step |
| Remote control | Possible via USB, Ethernet TCP/IP or RS232 |
| Available options | |
| SRS modulator | EOM with resonant fixed modulation frequency of 20 MHz Built-in and controllable with the same software 1032 nm beam modualted power: 0.3 W |
| High power for 1032 nm beam | 2 W (unmodulated) 1 W (modulated) |
| Long pulse / Narrow-bandwidth option | ~ 4.5 ps / ~ 5 cm-1 (OPO Signal) ~ 6.5 ps / ~ 10 cm-1 (1032 nm beam) |
| Additional IR output port | Additional 1032 nm beam output for pumping another OPO (Levante IR ps) Wavelength: 1032 nm ± 1.5 nm Power: > 4 W Spectral bandwidth: ~ 10 cm-1 Pulse width: ~ 2 ps (~ 6.5 ps optional) Repetition rate: 80 MHz ± 0.5 MHz |
- Tunable picosecond laser
- Wavelength scan / sweep function for fast spectra acquisition
- Independent power control for 1032 nm beam and Signal beam
- Automated optical delay management for dispersion compensation
- Remote-service via LAN interface
- Optional: Wavelength extension from 210 nm – 10 μm
(Realized by SHG, THG, FHG, or DFG; e.g. APE’s HarmoniXX)
Above: Typical Signal and Idler power vs. wavelength
Above: Relative intensity noise (RIN): Shot noise limited OPO Signal output for frequencies > 10 MHz
Datasheets & Brochures
APE picoEmerald CARS SRS rev.4.2.0 (pdf / english)
APE picoEmerald Lit. rev.3.4.1 (pdf / english)
or
Email & Phone Contacts
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