- New fully automated tuning with Windows-based Control Software: Simply enter the desired wavelength into the software
- Internal diagnostics for power and wavelength
- Two tunable output beams with different colors [ Signal and Idler ]
- Signal and Idler beam overlapped in space and time | Beam separator included
- Ideal 2 ps pulse width for Coherent Raman imaging
- Remote access available for fast and easy customer support and error diagnosis
The Levante Emerald Scientific is a widely tunable fully automated high power NIR light source of ps pulses. It is based on a synchronously pumped optical parametric oscillator (OPO), with an external green ps laser as pump. The OPO is adaptable to work with pump pulse width between 2 … > 20 ps and pump powers from 2 … 20 W for an output power of up to 6 W. The pulses of the output beams are close to transform limit and of high beam quality. The Levante Emerald Scientific exhibits a robust mechanical design on a solid steel baseplate enabling stable long term operation as well as excellent beam pointing stability.
New automated Version
The Levante Emerald Scientific has been newly developed featuring full automation, i.e. software controlled tuning. This is made possible by its entirely new control electronics, internal diagnostics, and Control Software packaged conveniently in a new housing.
Hence handling has never been easier. The Control Software on the PC is equipped with a Software Interface (using TCP/IP). The OPO can easily be integrated into larger experimental setups and software controlled environments.
The new Levante Emerald Scientific is based on A·P·E’s long standing experience in developing and manufacturing fully automated OPOs.
Tuning – Sweep mode
The actual OPO Signal wavelength and bandwidth is measured by an internal real-time high resolution spectrometer, and the power by calibrated photodiodes. To tune, the user simply enters the desired wavelength into the Control Software of the OPO.
For fast tuning over a certain wavelength range a sweep function has been added. It allows tuning from a set start wavelength to a set end wavelength automatically in short time, either with a predeﬁned hold at each spectral step, or with advance for each step on a software trigger.
Ideal for multi-color experiments /multi photon microscopy
Because of the synchronous pumping, the Signal and Idler pulses of the Levante Emerald Scientific are generated jitter-free with respect to each other as well as the pump pulse. Signal and Idler are available at the same time1). Since they are coupled out of the OPO collinearly, the Signal and Idler pulses have an intrinsically perfect spatial and temporal overlap in the output beam of the system.
The photon energy difference between Signal and Idler is continuously tunable, which makes the Levante EmeraldNSP an ideal system for multi-color excitation experiments, such as e.g. SRS (Stimulated Raman Scattering), or CARS (Coherent Antistokes Raman Scattering).
Even more combinations of jitter-free pulses with different wavelengths are available when using a pump laser which also offers (preferably undepleted) green pulses at the fundamental wavelength.
Using the A·P·E line of HarmoniXX frequency converters as an add-on, also wavelengths down to 190 nm can be generated, enabling a range of further experiments e.g. in biology, or materials science.
Short ps Version
The Levante Emerald Scientific 2 ps (pumped by the Emerald Engine with 2 ps pulses) offers an optimized pulse width with maximum spectral bandwidth in the Raman fingerprint region without compromise in resolution for highest signal levels.
Its high efficiency in non-linear processes makes the Levante Emerald Scientific 2 ps an ideal tool for applications such as CARS (Coherent Antistokes Raman Scattering) and SRS (Stimulated Raman Scattering) imaging applications.
Compared to the 6 ps version of the Levante Emerald, the Levante EmeraldNSP 2 ps has shown improvement in CARS signals by a factor of 10, and in SRS signals by a factor of 2.5. Also signals of SHG or Multi Photon Fluorescence are much improved.
The Levante Emerald has been successfully used for SHG imaging. Important wavelengths for MPE (Multiphoton Excitation Microscopy) are directly available, such as e.g. 950 nm for GFP (green fluorescence protein) or 1160 nm for RFP (red fluorescence protein).
An OPO is especially suited for power scaling because it uses a parametric process for operation – compared to a laser process with intrinsic heating due to the quantum defect – where there is no intrinsic heat generated by the parametric process in an OPO.
Please ask for adaptations to pump powers other than mentioned in this datasheet.
The Levante EmeraldNSP HP is ideally suited for high power pumping of harmonic generators (such as the HarmoniXX) for high output power especially in the UV wavelength range. For a complete system emitting in the UV, please see A·P·E’s datasheet “High power tunable ps UV source”.
A TCP/IP interface and LAN connection allow for remote addess to log files as well as remote service.
1) The wavelength of Signal and Idler are dependent on each other according to the relation 1/ λPump = 1/λSignal + 1/λIdler
|Pump laser||Emerald Engine | 513 nm||532 nm | 6 ps | 4 W||532 nm | 15 ps | 20 W|
|Pump laser parameters||515 nm | 3 W | approx. 2 ps||532 nm | 4 W | approx. 6 ps||532 nm | > 20 W | approx. 15 ps|
|Tuning range manual||690 (typ. 680) … 960 nm||690 … 990 nm||690 … 990 nm|
|1120 … 2030 nm||1150 … 2300 nm||1150 … 2300 nm|
|Tuning range automated||700 … 960 nm||720 … 990 nm||720 … 990 nm|
|Output power||> 0.5 W @ (720 … 960 nm)||> 0.75 W @ (750 … 990 nm)||> 6 W @ (750 … 990 nm)|
|> 0.4 W @ (1150 … 1350 nm)||> 0.6 W @ (1150 … 1350 nm)||> 3.5 W @ (1150 … 1350 nm)|
|Pulse width||approx. 2 ps||approx. 5 … 6 ps||approx. 12 … 15 ps|
|Photon energy difference|
|Signal – Idler||1440 … 9000 cm-1||1400 … 10000 cm-1||1400 … 10000 cm-1|
|Signal – Laser Fundamental||720 … 4500 cm-1||700 … 5000 cm-1||–|
|(when 1031 nm beam available from pump laser)||(when 1064 nm beam available from pump laser)|
|Time bandwidth product||
approx. 80 MHz
(depending on the repetition rate of the pump laser)
|Beam quality M2||
< 1.2 (typ. 1.1)
linear / horizontal
Standard Software Interface (using TCP/IP)