Cr:Forsterite Multi-Terawatt Amplified Laser System
| Brand | Hengjiu |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | Jaws |
| Pricing | Available Upon Request |
| Wavelength | 1250 nm |
| Pulse Width (FWHM) | 60–80 fs |
| Peak Power Output | 1–2 TW |
| RMS Output Stability | <2% |
| Repetition Rate | 10 Hz |
| Beam Divergence | <2 mrad |
| Spatial Mode | TEM₀₀ |
| Polarization | Linear, Horizontal |
| Contrast Ratio | >1000:1 |
Overview
The Cr:Forsterite Multi-Terawatt Amplified Laser System (Model Jaws) is a high-intensity, ultrafast laser platform engineered for advanced nonlinear optics, strong-field physics, and attosecond science applications. Based on chromium-doped forsterite (Cr:Mg2SiO4) gain media, this system delivers carrier-envelope-phase-stable pulses centered at 1250 nm—strategically positioned in the near-infrared window where dispersion management and parametric amplification efficiency are optimized. Unlike Ti:sapphire-based systems operating at ~800 nm, the 1250 nm central wavelength enables reduced ionization thresholds in wide-bandgap materials and enhanced phase-matching in optical parametric chirped-pulse amplification (OPCPA) pump stages. The laser employs a regenerative amplifier architecture with double-pass cryogenically stabilized Cr:forsterite crystals, enabling robust energy extraction while maintaining diffraction-limited beam quality (TEM₀₀) and linear horizontal polarization. With pulse durations of 60–80 fs (FWHM), peak powers exceeding 1 TW, and shot-to-shot RMS stability below 2%, the Jaws system meets stringent requirements for pump-probe spectroscopy, high-harmonic generation (HHG), and laser-driven electron acceleration experiments.
Key Features
- Ultrafast pulse generation at 1250 nm using Cr:forsterite gain medium—optimized for low quantum defect and high thermal conductivity
- Multi-terawatt peak power output (1–2 TW) achieved via hybrid chirped-pulse amplification (CPA) with dual-stage amplification
- Sub-80 fs pulse duration (FWHM) with transform-limited spectral phase verified by frequency-resolved optical gating (FROG)
- High spatial fidelity: diffraction-limited TEM₀₀ mode with M² < 1.1 and beam divergence < 2 mrad (full angle)
- Stable temporal contrast ratio > 1000:1 (pre-pulse to main pulse), critical for high-intensity target interaction without premature plasma formation
- 10 Hz repetition rate synchronized to external timing triggers with jitter < 100 ps, compatible with pump-probe delay stages and time-of-flight diagnostics
- Integrated beam diagnostics including real-time energy monitoring, autocorrelation trace acquisition, and polarization extinction ratio verification
Sample Compatibility & Compliance
The Jaws laser system is designed for integration into vacuum-based experimental end-stations, including HHG beamlines, laser-plasma interaction chambers, and ultrafast electron diffraction (UED) setups. Its 1250 nm output is compatible with standard fused silica and CaF₂ optics, as well as custom-coated broadband mirrors and gratings rated for >500 mJ/cm² fluence at 10 Hz. The system conforms to IEC 60825-1:2014 Class 4 laser safety standards and includes interlocked beam enclosures, emergency stop circuitry, and integrated laser emission indicators. All control electronics meet CE electromagnetic compatibility (EMC) directives. While not certified for clinical or industrial process control use, the system supports GLP-compliant data logging when interfaced with third-party acquisition hardware meeting FDA 21 CFR Part 11 audit-trail requirements.
Software & Data Management
Operation is managed through a modular LabVIEW-based control suite supporting remote configuration of amplifier pump energy, cavity dispersion compensation, and diagnostic trigger delays. Pulse energy, repetition rate, and beam position data are logged in HDF5 format with timestamped metadata, enabling traceability across multi-day experimental campaigns. The software architecture supports Python API access (via PyVISA) for automated parameter sweeps and closed-loop optimization routines. All user-accessible settings are version-controlled and exportable as JSON configuration profiles. Audit trails record operator login, parameter changes, and diagnostic calibration events—facilitating ISO/IEC 17025-compliant laboratory documentation practices.
Applications
- Generation of coherent soft X-ray radiation via high-harmonic generation in noble gases
- Pump-probe studies of carrier dynamics in 2D materials (e.g., MoS₂, h-BN) and perovskites
- Laser wakefield acceleration (LWFA) of electrons in gas jets and capillary waveguides
- Time-resolved mid-IR spectroscopy using difference-frequency generation seeded by amplified idler pulses
- Nonlinear microscopy requiring deep-tissue penetration and reduced photodamage
- Fundamental tests of strong-field QED effects under relativistic intensities (>10¹⁸ W/cm²)
FAQ
Is the Cr:forsterite gain medium water-cooled or cryogenically cooled?
The Cr:forsterite amplifier crystals operate at cryogenic temperatures (77 K) using a closed-cycle helium refrigerator to minimize thermal lensing and maximize extraction efficiency.
Can the system be upgraded to support carrier-envelope phase (CEP) stabilization?
Yes—CEP stabilization is available as an optional add-on module, including f-to-2f interferometry, feedback electronics, and piezoelectrically controlled oscillator cavity length tuning.
What vacuum interface options are supported for beam delivery into experimental chambers?
Standard configurations include CF-63 and CF-100 flanges with antireflection-coated ZnSe viewports; custom UHV-compatible beam tubes with differential pumping stages can be supplied upon request.
Does the system comply with FDA 21 CFR Part 11 for electronic records in regulated research environments?
While the base system does not include Part 11–certified software, the data acquisition layer supports integration with validated third-party platforms that provide electronic signature, audit trail, and role-based access control capabilities.
