External Cavity Laser Kit
Unfortunately, the ECLK is not currently available for sale. An updated version with improved performance is currently under development and is expected to become available in Q3 2024. Stay tuned or contact us directly for more information.
Alpes Lasers’ line of External Cavity Laser Kits (ECLK) is designed for single-mode operation with wide spectral tunability. The ECLK consists of a quantum cascade laser (QCL) gain chip, a grating-tuned extended optical cavity in Littrow configuration, laser drive electronics, an Alpes Lasers TC-3 temperature controller, and a graphical user interface software.
The ECLK is compatible with the Alpes Lasers line of Broad Gain QCLs which tune over up to 25% of their center wavelength. The gain medium is prepared in form of antireflection (AR) coated Fabry-Perot cavity, soldered to an aluminium nitride submount and to a copper carrier. The temperature is actively regulated by a heatsink assembly that includes a thermoelectric element and water cooling for improved heat dissipation.
The graph below showcases the range covered by different chips that can be used in the ECLK system in dotted lines and the direct emission range in full lines. The bottom row shows a series of chips that can be used to cover the entire range, and over these other chips may be used to reach a particular range better.
The following table lists the specific performance of the Broad Gain lasers shown in pulsed mode (expect BG-3.2-3.6 which operates CW). Only the tuning range and minimum power over the tuning range are part of the specification; the typical tuning curve is shown as an example and each laser will have a different tuning curve. The average power will vary over the tuning range and will will exceed the minimum value at its optimal point by a large amount but this maximum value can vary from laser to laser.
Click on the pictures for larger version
Furthermore, standard Fabry-Perot lasers with a narrower gain can also be compatible with the ECLK. You can see here a small subset of the performances available. For performances at other wavelengths, write to us to request testing!
|Min. Power over range||Typical tuning curve|