High conversion efficiency
Typically 70–90% SHG efficiency for fibre-amplified input powers (0.5–5W), with optimisation options for both low- and high-power regimes.
Description
The MSL linear cavity SHG system allows highly efficient frequency doubling of laser light over a broad wavelength range, including 740/370, 798/399, 840/420, 922/461, 960/480, 1020/510, 1107/553nm and others. Unlike bow-tie ring cavities, the linear cavity is a rock solid monolithic design with no kinematic adjustment to the cavity required by the user, providing stable and robust sources for new wavelengths. SHG efficiency is typically 80 to 90% for fibre-coupled mid-power amplified systems (0.5 to 5 watts), and can be optimised for low power direct ECDL (e.g. 100mW) or high power fibre amplified systems.
The MSL is available separately as a complete doubling system with input mode matching, temperature stabilisation, PDH (or FM-demodulation) locking, fibre input and fibre output, or combined with optical or fibre amplified lasers, to provide stable and robust sources for new wavelengths.
The MSL uses a variant of our mLC mini laser controller as the controller for the cavity, which comes with integrated digital control, installed within the main chassis, so no external cavity control electronics box is required.
Monolithic linear cavity design
No kinematic adjustments required, ensuring long-term stability and alignment-free operation.
Broad wavelength coverage
Supports a wide range of fundamental/harmonic pairs, including:
740/370nm, 798/399nm, 922/461nm, 960/480nm, 1020/510nm, and more.
Fully integrated control system
Includes temperature stabilisation and PDH (or FM) locking with integrated digital control—no external controller required.
Flexible system configurations
Available as a complete standalone doubler or integrated with our laser and amplifier systems.
Features
- Alignment-free linear cavity optical design
- Broad wavelength tunability, up to 75nm
- No kinematic mounts: vibrationally inert
- Hermetically sealed; gas purge optional
- High bandwidth piezo actuator (>30kHz)
- Low amplitude noise
- Self-contained, electronics included
- Hänsch-Couillaud (HC) locking built-in
- Wide selection of wavelength bands (370nm – 445nm, 445nm – 520nm, 510 - 560nm)
- High efficiency, over 80% at 1 watt
- Crystal displacement to increase lifetime
- User-changeable crystal
- Re-usable, re-configurable
- Compatible with MOGLabs LASRACK
Options
- EOM for PDH locking (15MHz)
- Free space output, on request