The MOGLabs cateye diode laser offers a new twist in external cavity diode lasers. A cateye reflector and ultranarrow filter replace the alignment-sensitive diffraction grating of conventional Littrow and Littman-Metcalf designs.

cel schematic

The CEL is robust, stable, and acoustically inert. You can literally hit it with a hammer and it will stay locked, and it is inherently self-aligning so you can tune tens of nanometres without having to realign. In combination with MOGLabs electronics, the linewidth can be well below 100 kHz. The CEL is available for most wavelengths between 450 to 530nm and 630 to 1620nm, at powers up to 250mW extra-cavity.

Enjoy the rock-solid stability normally expected only from DFB and DBR diodes – but with wide-range tunability, order-of-magnitude smaller linewidth, broader range of wavelengths, much lower sensitivity to optical feedback – and much lower diode cost.


  • Cateye filter design
  • Fast piezo feedback
  • Self-aligning
  • Precision wavelength adjustment


  • High-performance
  • Narrow linewidth
  • Acoustically inert
  • Very low frequency noise


  • Laser cooling and trapping
  • Bose-Einstein condensation
  • Trapped ion quantum computing
  • Quantum optics: squeezed light
  • Electromagnetic transparency and slow light
  • Time and frequency standards
  • Laser spectroscopy

Specifications CEL v002

450-530nm;630-1620nm Up to 250mW outputpower,diode dependent
Linewidth Typically <100kHz,configurationdependent
Modulation 20MHz bandwidth,AC or DC coupled,<20ns phase delay
RF bias tee option:>2.5GHzbandwidth
Coarse tuning range Diode dependent;e.g. 776nm-802nm or 850–895nm(single diode)
Beam diameter(1/e2) Typically 0.6 x 0.3mm;diode-dependent
Polarisation Vertical linear 100:1 typical(standard diode)
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)
Scan range 20GHz typical,with MOGLabs controller,diode dependent
Mode-hop free scan 20GHz typical,with current feed-forward
Piezo User-replaceable module
Protection Relay,cover interlockconnection,reverse diode
Indicator Laser ON/OFF (LED)
Modulation input SMA DC to 20MHz or AC 10kHz to 20MHz, ground isolated
Option: RF bias tee, 16MHz –2.5GHz (lower cutoff optional)
Connector MOGLabs DLC Diode Laser Controller (single cable connect)
Dimensions Compact: 108×70 x83mm (LxWxH),0.5kg
Extended (as shown): 220 x 95 x 90.5 (LxWxH), 1.3kg