The Stuttgart Instruments Alpha is an ultrafast, wavelength-tunable frequency conversion system. The compact, passively stable FF-OPO (fiber-feedback optical parametric oscillator) design provides high power and spectral stability, repeatable wavelength setting, and shot-noise-limited output where required. Available with several pump laser options at different repetition rates and pulse durations.
Versions
Choose your pulse duration
Performance
Specified to the last digit
Besides broad tunability and full automation the Alpha features:
- Power stability < 0.5 %rms
- Spectral stability < 0.02 %rms
- Repeatability < 0.1 nm
- RIN < −160 dB/Hz
Applications
Example experiments
- (s)SNOM microscopy and imaging
- Coherent Raman (SRS, CARS) microscopy
- (M)IR spectroscopy
- Time-resolved pump–probe spectroscopy
- Vibrational spectroscopy
- Multiphoton fluorescence spectroscopy
Options
Tailor the Alpha to your setup
Replicator option
The replicator option stores and recalls complete system states (spectrum, output power, module settings). All modules are supported. Integrated in AlphaTune and accessible via the same API used for third-party automation.
Modulator option
The Alpha can be equipped with a high-speed optical modulator. All outputs are modulated through a single input signal. The system comes with a fully integrated modulation architecture including a precision electronic oscillator and full software support.
Narrowband option
An optional narrowband configuration delivers a significantly reduced linewidth for high-resolution spectroscopy while retaining the Alpha's broad tunability.
Multi-branch option
Two or more independently tunable, optically synchronized branches are available. Used for pump–probe setups and for feeding multiple experiments from one system.