Mid Infrared Tunable Laser

TOPO: State of the Art Mid IR Tunable Laser Technology for Spectroscopy

  • 1.43 - 4.2 µm (2400 - 7000 cm-1)
  • Narrow linewidth: 2 MHz (1·10-4 cm-1)
  • Hands-free motorized tuning
  • 300 GHz (10 cm-1) mode-hop-free tuning range
  • Easy all-digital DLC pro control

Mid-infrared tunable lasers between 2 - 5 µm are necessary tools for applications like high resolution molecular spectroscopy and gas sensing, mid-infrared integrated photonics, optical component characterization, and quantum optics. For this reason, TOPTICA has developed a continuous wave optical parametric oscillator (OPO) that delivers the widest coverage of any MIR laser in this wavelength range. This system, the TOPO, has high power and narrow linewidth, and is capable of fast phase and frequency modulation necessary for sensitive gas phase MIR spectroscopy techniques.

The TOPO fills a critical gap in existing continuous wave laser technology. TOPTICA offers various tunable diode laser platforms to provide wide wavelength coverage below 2 µm. Wavelengths longer than 4 µm can be generated by quantum cascade lasers. Interband cascade lasers are the only laser diode technology with direct emission between 2 – 4 µm, and these lasers tend to have very small tuning ranges (few nm) and low output power (1 mW). The TOPO relies on TOPTICA’s long experience with efficient nonlinear frequency conversion of diode lasers to generate a high power MIR laser with wide tuning range.

Charakteristic Tuning Curve

Characteristic Tuning Curve