DL pro – Tunable Diode Laser

The ultimate tunable diode laser: TOPTICAs DL pro

Tunable diode laser in pro design ECDL setup
Available with four exceptional AR diodes around 780 nm, 850 nm, 940 nm, and 1040 nm
Output powers up to 100 mW
Ultra stable, typical linewidth 100 kHz (5 µs)
Very low drift with room temperature changes (typ. << 100 MHz/K)
Insensitive to acoustics and vibrations
Easy coarse tuning up to 100 nm
Mode-hop free tuning up to 50 GHz (optimized virtual pivot point)
Beam angle compensation mirror included
Fast AC and DC current modulation included

The DL pro is the ultimate tunable diode laser. Its revolutionary mechanical design allows both easy operation and extreme stability at the same time. The underlying Littrow geometry allows for highest output powers, and optimum mode-hop free tuning is realized with a perfectly positioned virtual pivot point for the grating movement.

Technical Information

Wavelength coverage and coarse tuning of TOPTICA’s DL pro systems.

DL pro
Center wavelength	780 nm, 850 nm, 940 nm, 1040 nm
Max. power	50 .. 100 mW
Typical coarse tuning range	30 .. 100 nm
Typical mode-hop free tuning range	30 - 50 GHz
Typical linewidth (5 µs integration time)	100 kHz
Typical output beam characteristics	3 mm x 1 mm
Typical output beam polarization	Linear > 100 :1
Fiber coupling efficiency*: min. (typ.)	55 (65) %
Fiber coupling efficiency with APP*: min. (typ.)	65 (75) %
Typical long term frequency change with room temperature	100 MHz / K
Environmental temperature (operating)	15 - 30 °C
Environmental temperature (transport)	0 - 40 °C
Humidity	Non condensing
Operating voltage	100 .. 120 V / 220 .. 240 V AC 50 .. 60 Hz (auto detect)
Power consumption	Typ. < 100 W, max. 300 W

*With TOPTICA's FiberDock, efficiencies are possibly lower with strong ellipticity or short wavelengths
Specifications are subject to change without further notice.
TOPTICA Photonics AG, www.toptica.com

DL pro
	DL pro 780	DL pro 850	DL pro 940	DL pro 1040
Wavelength range	765 - 790 nm Down to 760 nm, up to 795 nm	815 - 845 nm or 825 - 853 nm	910 - 985 nm up to 995 nm*	980 - 1075 nm
Output power**	30 - 80 mW	30 - 80 mW	30 - 80 mW	20 - 50 mW
Typical mode-hop free tuning range***	30 - 50 GHz
Typical linewidth (5 µs)	100 kHz
ASE (dB)	< -35 .. -55 dB	< -35 .. -55 dB	< -35 .. -55 dB	< -35 .. -55 dB

Specifications are subject to change without further notice.
*Upon request,
**depending on wavelength,
***Depending on power
TOPTICA Photonics AG, www.toptica.com

Options & Related Products

Options:

Option	Description
MOT/DL pro	Motorized wavelength selection with manual and computer control Typical accuracy ±0.2 nm, much higher repeatability
Optical Isolation single stage	Isolators are used to protect the laser diode from back reflections. This not only prevents damage to the diode but also ensures untroubled single-mode operation and tuning. Fiber coupling with angle polished fibers (both ends) requires at least a single stage isolator.
Optical Isolation double stage	Double stage isolators are needed if reflections from the experiment into the laser are expected. Fiber coupling with non-angle polished fibers also requires a double stage isolator.
APP C	The compact prism pair is used for beam compression only. The compressed circular beam is small enough for using inexpensive small aperture isolators, and the fiber coupling efficiency is enhanced by approximately 10 %. The compression ratio is set at the factory. The variable APP J is available for beam compression and expansion.
FiberDock	TOPTICA's patented fiber coupler provides highest single-mode fiber coupling efficiencies, easy alignment and at the same time highest stability. TOPTICA additionally offers a wide range of single-mode and polarization maintaining fibers, including fiber-optic beam splitters. Optical isolation is mandatory for fiber coupled diode laser systems.
Electronics Modules	A large range of control, stabilization and frequency locking modules are available.

Standard Configurations:

Configuration	Consists of	Available wavelengths
Configuration I	Laser head, electronics Modulation PCB DL-Mod	765 – 795 nm, 815 – 853 nm, 915 – 940 nm, 980 - 1075 nm
Configuration II	Laser head, electronics Isolator 30 dB Modulation PCB DL-Mod + FiberDock (optional)	765 – 795 nm, 815 – 853 nm, 915 – 940 nm, 980 - 1075 nm
Configuration III	Laser head, electronics APP compact, compressing Isolator 30 dB Modulation PCB DL-Mod + FiberDock (optional)	765 – 795 nm, 815 – 853 nm, 915 – 940 nm, 980 - 1075 nm
Configuration IV	Laser head, electronics Isolator 60 dB Modulation PCB DL-Mod + FiberDock (optional)	765 – 795 nm, 815 – 853 nm, 1060 - 1075 nm

Related Products:

DL 100 / pro design: pro series ECDL with any DL 100 diode from 370 nm .. 1770 nm
DL 100: Economic Littrow type ECDL in modified Hänsch design
DL DFB: Diode laser with wide mode hop free tuning and slightly broader linewidth
TA pro: pro series ECDL with tapered amplifier (649 .. 1083 nm available)
BoosTA: Semiconductor amplifier for higher powers (649 .. 1083 nm available)
Frequency converted diode lasers for all other wavelengths
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