Using a laser diode or quantum-cascade laser? Don't forget the electronics. – Wavelength Electronics
Cascade Laser Corp UHB512LCC Upper Head Block NEW T502 | eBay
Quantum Cascade Lasers: Controlling and Phase‐Locking a THz Quantum Cascade Laser Frequency Comb by Small Optical Frequency Tuning (Laser Photonics Rev. 15(6)/2021) - Consolino - 2021 - Laser & Photonics Reviews - Wiley Online Library
Quantum Cascade Laser Mount Model LDM-4872 from ILX Lightwave