Photodigm Inc は自社工場での設計・製造を通して、多種・高品質の商品供給を維持しています。
C. Extended Mode-Hop Free range DBR Laser diodes
Photodigm developed a DBR chip which allows a good control of both temperature and current tunings, and especially of temperature differences between the gain medium and the grating, in order to achieve mode-hop free ranges up to 2nm for all the Photodigm’s wavelengths. Both parameters still remain easy to reach and to handle with, thanks to their specific TOSA package: up to 30°C and 200mA.
General principle of a DBR
This offers more versatile solutions in applications such as Raman spectroscopy or Tunable Laser Diode Absorption Spectroscopy (TDLAS) and opens new metrology fields to DBR such as wavelength-sweeping interferometry telemeters.
Also, Photodigm’s DBR products was mentioned in below academic article
Mode-hop-free operation of a distributed Bragg reflector diode laser in an external fiber-cavity configuration