SAF Gain Chips, 1650 nm Center Wavelength
- InP Gain Chip on Submount or Submount with Heatsink
- Ultra-Low Reflectance at Angled Facet
- Custom Coatings Available
Actual Size Compared
to US One Cent Coin
SAF1091C
Chip on Submount
SAF1091H
Chip on Submount
with Heatsink
Please Wait
Parameter | Min | Typ | Max |
---|---|---|---|
Operating Current | - | 500 mA | 800 mA |
Center Wavelength | 1620 nm | 1650 nm | 1680 nm |
ASE Power @ IOP | 0.8 mW | 1.3 mW | - |
Peak Gain @ IOP | - | 23 dB | - |
Optical Bandwidth | 80 nm | 90 nm | - |
Gain Ripple (rms) @ IOP Res. BW = 0.1 nm |
- | - | 0.7 dB |
Angled Facet Reflectivity | - | 0.005% | 0.01% |
Normal Facet Reflectivity | - | 90% | - |
Forward Voltage | - | 1.35 V | 1.6 V |
Chip Length | - | 1.5 mm | - |
Waveguide Refractive Index | - | 3.2 | - |
Lateral Beam Exit Angle | - | 26.5° | - |
Transverse Beam Divergence (FWHM) |
- | 30° | - |
Lateral Beam Divergence (FWHM) |
- | 18° | - |
Features
- Broad Tuning Range
- High Output Power
- Ultra-Low Angled Facet Reflectance: 0.005% (Typ)
- Gain Medium for Narrow Linewidth Fiber Bragg Grating Lasers
- Gain Medium for Widely Tunable External Cavity Semiconductor Lasers
Single Angled Facet (SAF) gain chips use a geometric technique to further reduce the reflection on one end of the chip by curving the ridge waveguide so that it is not normally incident to the chip facet. This, in combination with an AR coating on that facet, virtually eliminates back reflections that can create unwanted feedback into the laser cavity. As a result, SAF gain chips are superior to standard gain chips when used in Extended Cavity Lasers (ECLs), praticularly tunable ECLs, since any residual reflection from the AR-coated Fabry-Perot (FP) gain chip facet often limits the stability, output power, and spectral quality of the laser.
Our 1650 nm SAF gain chip is available in two configurations. The SAF1091C chip is offered on a submount, while the SAF1091H is provided on the same submount with a heatsink and connected cathode and anode leads.
Sample Results of an SAF1091 Used in a Basic Littrow Configuration
For more information on using a SAF gain chip in an external cavity laser see the online External Cavity Diode Laser Tutorial.
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