Tunable Littrow Lasers (LDL)
The MOGLabs LDL Enhanced Littrow External Cavity Diode Laser is our fourth-generation Littrow laser for advanced applications in atomic and quantum physics.
The LDL Enhanced offers a number of advantages relative to earlier designs and competing products in the market, providing a robust, stable, and vibrationally inert device. Grating rotation and vertical alignment are uncoupled, allowing simple tuning over the full diode wavelength range without realignment. Mode-hop-free scanning range of 60GHz. Durable design with long-life piezos, sapphire wear pads, ball-bearing pivot. Improved suppression of adjacent cavity modes to ensure single-mode operation. Hermetic seal to reduce sensitivity to air pressure changes. Beam alignment with laser centre regardless of wavelength. Dramatic improvements to ease of alignment and focus without opening the cavity allow inexpert users to quickly change laser diode. Wavelength options extend from 368nm to 1620nm, and powers up to 300mW extra-cavity.
Features
- - Mode-hop free scan range up to 100GHz
- - Wavelengths from 368nm to 1620nm
- - Vibrationally inert
- - Semi-hermetically sealed
- - Decoupled grating rotation and tilt
- - Precision alignment and focus controls
- - Narrow linewidth
- - Fast piezo feedback
- - High bandwidth low latency modulation
- - Use with MOGLabs digital diode laser controller, or your existing commercial or home-- made electronics
- - Compatible with MOGLabs LASRACK
- - Compatible with MOGLabs mini laser controller
Applications
- Laser cooling and trapping
- - Bose-Einstein condensation
- - Quantum optics: squeezed light
- - Electromagnetic transparency and slow light
- - Time and frequency standards
- - Laser spectroscopy
Specifications
Wavelength/Frequency
| Wavelength | 368nm to 1612nm |
|---|---|
| Power | Up to 300mW output power, diode dependent |
| Linewidth | Typically <200kHz, diode dependent |
| Modulation | 20MHz bandwidth, AC or DC coupled, 20ns latency RF bias tee option: >2.5GHz bandwidth |
| Coarse tuning range | Up to 50nm for single diode |
Optical
| Beam diameter (1/e2) | Typically 1mm x 2mm to 1.5mm x 4mm; diode-dependent |
|---|---|
| Polarization | Linear 100:1 typical |
Thermal
| TEC | ±14.5V 3.3A Q = 23W standard |
|---|---|
| Sensor | NTC 10kΩ standard; AD590, 592 optional |
| Stability at base | ±1mK (controller dependent) |
| Cooling | Water cooling connections optional (usually not required) |
Sweep/Scan
| Scan range | Up to 100 GHz with extended range option, rate 4Hz to 70Hz |
|---|---|
| Mode-hop free scan | 10 GHz to 100GHz, diode dependent, with current feed-forward |
| Piezo | 0 – 150V, 2 to 5μm |
| Cavity length | 15mm (10GHz FSR) approx. |
Electronics
| Protection | Relay, cover interlock connection, reverse diode |
|---|---|
| Indicator | Laser ON/OFF (LED) |
| Modulation input | 20MHz bandwidth, AC or DC coupled, 20ns latency RF bias tee option: >2.5GHz bandwidth, |
| Connector | MOGLabs DLC Diode Laser Controller (single cable connect) |
Dimensions
| Dimensions | Laser: 58 x 55 x 31mm (LxWxH) Compact chassis: 108 x 70 x 87mm, 0.5kg Extended chassis: 240 x 95 x 93mm, 1.3kg |
|---|
Options
AR and non-AR diodes, Faraday isolators, compact and extended chassis, fibre coupling. Please contact MOGLabs for further details. |
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