dfBeam – DFB Diode Laser System
- Narrow linewidth < 10 MHz
- Long coherence length > 2.5 m
- > 35 dB ASE suppression
- Fiber coupling available
The dfBeam unites the advantages of our industrial diode laser setup and the unique properties of the latest DFB diode technology. Extremely narrow linewidth, high beam quality, low power consumption, and highest robustness against vibration or mechanical shocks – simply the best for OEM integration. This results in a hands-off laser system for applications such as high resolution Raman microscopy, interferometry or gas sensing.
|Wavelength||760 nm||763 nm||773 nm||780 nm||785 nm|
|Free-beam power||35 mW||40 mW||60 mW||65 mW||80 mW|
|Other wavelengths from 660 nm -2800 nm on request|
Main Specifications (dfBeam-785-S):
|Spectral linewidth (typ.)||< 10 MHz|
|Coherence length (typ.)||> 2.5 m|
|ASE suppression (typ.)||> 35 dB|
|Wavelength stability (typ.)||0.5 pm (≙ 0.01 cm -1) RMS (3h)|
|Power (free-beam)||Up to 80 mW|
|Spatial node||TEM00, M² < 1.2|
|Beam diameter (typical @ 1/e²)||1.3 mm|
|Beam shape, ellipticity||Circular, < 10%|
|Divergence (typical)||< 1 mrad|
|Power stability (drift over 48 h @ ∆ T ± 1°C)||< 0.5 %|
|Pointing stability||< 10 µrad/K|
|Polarization||> 100: 1, linear|
|DC input requirements||12 V / 2 A|
|Operating ambient temperature range||15..40 °C|
|Dimensions (L x W x H)||156 x 56 x 66 mm³|
|Specifications are subject to change without further notice|
For complete spec table please refer to the dfBeam brochure
dfbeam– typical emission spectrum showing more than 35 dB ASE suppression.
Options & Related Products
Options & Related Products
- Isolator option
Isolator unit with mount (fixed to dfBeam), isolation > 34 dB, transmission > 86 %. This option is strongly recommended, as single-frequency laser are very sensitive even to very low optical feedback
- Fiber coupling - FiberDock
TOPTICA's FiberDock turns the dfBeam into a rugged ﬁber-coupled diode laser system. Both single-mode and polarization-maintaining fibers can be connected to the FiberDock. Better than 60 % coupling efficiency is guaranteed, but efficiencies of 75 % are typical due to the high beam quality of the iBeam.
Please note: Fiber coupling is only available in combination with the isolator option!
- Fiber output collimator – FiberOut
Some applications demand a fiber-coupled laser and beam collimation at the end of a fiber. To provide a comprehensive solution, the FiberOut turns the divergent beam at the fiber end into a collimated beam again (0.5 mm - 4 mm @ 1/e² CA: 4.8 mm). FC/PC and FC/APC connectors are standard, others can be accommodated.
- Wide-range AC/DC transformer
Provides the necessary 12 V DC, if no
- Raman microscopy / spectroscopy
- Chemical process control / Raman microscopy
- Gas analysis / LIDAR
- Drug screening
- High Resolution Raman Microscopy
dfbeam– data taken by TOPTICA customers: wavefront of a lens recorded via phase shifting interferometry.