HarmoniXX Difference Frequency Generation Harmonic Generation

The HarmoniXX Difference Frequency Generation (DFG) is designed to extend APE’s product line of wavelength converters into the mid infrared (MIR) range.

It mixes signal and idler output beams of synchronously pumped optical parametric oscillators (OPOs) and is available for various pump sources. The DFG output wavelength can be changed easily by tuning the OPO Signal. It covers a wide wavelength range of 4 to >15μm.

The HarmoniXX DFG has an integrated wavelength separation for maximum usability. The output is very stable benefitting from the fact that the OPO output pulses are intrinsically jitter-free. The DFG is available for femtosecond (fs) and picosecond (ps) OPOs of different wavelength ranges.

The HarmoniXX DFG is available in different versions, depending on the pump source and the pulse width. The ps version can be pumped by pulses with 2 to 6ps pulse width and is able to reach wavelengths from 4.8 to 15μm. It is optimized for high resolution measurements and pulses with narrow bandwidth. Therefore it is perfect for sum frequency mixing spectroscopy.

The fs version of the HarmoniXX DFG delivers short pulses with broad spectral bandwidth in the MIR. The standard version can be tuned from 4 to 11μm. An optionally available optics set extends the wavelength range to 10 to >15μm. The HarmoniXX DFG fs is especially suitable for applications that require high time-resolution. The crystal used in the HarmoniXX DFG fs is optimized for high output power and best bandwidth conversion.


  • High conversion efficiency
  • Easy wavelength tuning
  • Flexible architecture for fs/ps input



This product could be used for the following applications:

  • Multi photon microscopy
  • Non linear optics
  • Cellular and tissue fluorescence
  • Pump probe spectroscopy
  • Femtochemistry


This product is manufactured by APE GmbH.

Products in this category

Optical Parametric Chirped-Pulse Amplification Systems

APE Levante Emerald High Power, 192 to 2450nm, 0 to 6W

APE picoEmerald, 700 to 1950nm, 0 to 700mW

APE Levante Emerald Picosecond, 640 to 2300nm, 0.4 to 6W

APE Levante Infrared Picosecond and Femtosecond, 1320 to 4800nm, 0.6 to 2W

APE nanoLevante Nanosecond, 1450 to 4200nm, 0.5 to 40mW

ANTARES Series Quasi Continuous Wave Picosecond Fiber Laser

ALTAIR Series Quasi Continuous Wave High Power Fiber Laser

ALCOR Series <140fs, 920nm, 2W QCW Fiber Laser

DIADEM Series, High Energy, 1030/1064nm fs Fiber Laser for Optogenetics

ELMO Femtosecond Fiber Laser 1560nm

ELMO Femtosecond Fiber Laser 780nm

C-Fiber Femtosecond Fiber Laser 780nm

C-Fiber Femtosecond Fiber Laser 1560nm

CARBIDE Femtosecond Laser

PHAROS Femtosecond Laser

FLINT Femtosecond Yb Oscillator

ORPHEUS Optical Parametric Amplifier

HIRO Harmonic Generator

TOPAS Optical Parametric Amplifier

Second Harmonic Bandwidth Compressor SHBC

Tilt and Pulse Autocorrelator System

HarmoniXX Second, Third and Fourth Harmonic Generation

HarmoniXX Difference Frequency Generation Harmonic Generation

FC8004 Optical Frequency Comb

M-Comb and orange-Comb Femtosecond Fiber Laser

T-Light Femtosecond Fiber Laser

SmartComb Optical Frequency Comb

FC1500-250-ULN Optical Frequency Comb

FC1500-250-WG Optical Frequency Comb

FC1000 Optical Frequency Comb

Mid Infrared Optical Frequency Comb


femtoControl Pulse Compressor

Custom Continuum Laser Systems

SIRIUS Series High Energy Ultrafast Laser

ARGOS High Power Picosecond Laser

CHEETAH-X Picosecond Laser

PicoBlade Picosecond Micromachining Laser

gecco Femtosecond Laser

TL-1000 Series Timing Stabilisation Units

Back to Top

Back to Top