Feedback control detects frequency fluctuations in a DBR laser and adjusts tuning currents to suppress noise and narrow linewidth.
A conductive monocrystalline silicon carbide substrate dissipates heat from a semiconductor laser chip while an insulating film prevents electrical leakage.
A programmable laser diode system uses digital control and switching converters to adjust latch current for high efficiency.
Wafer-level optical element stack assemblies use spacer wafers to attach substrates, resolving alignment precision versus fabrication speed trade-offs.
Replacing mechanical motion with an acousto-optic modulator enables rapid, rugged broadband tuning for field spectroscopy applications.