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External Cavity and DFB Diode Lasers
Tunable diode lasers have been
TOPTICA’s core expertise since 1995,
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sets new standards with respect to noise
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diode lasers worldwide.
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reduces the laser linewidth.The DLC pro
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possibly “blind” control. Remote control
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as an economic solution for scientists who
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electronics are labeled SYST DL pro, SYST
DL 100, or SYST TA pro. The new systems
with DLC pro electronics are named
DLC DL pro, DLC TA pro or DLC CTL.
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the lowest possible cost. This product
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were performed with the DL 100.
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themselves particularly to applications
within industrial environments.
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accuracy of approximately ± 0.2 nm
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and ease of use, the DL pro mechanics
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require only tiny adjustments. They rotate
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“virtual” pivot point.
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acoustic stability. Special care has
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and materials with reduced sensivity to
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electronics DLC pro
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• Fast current AC & DC modulation
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fit Lorenzian lineshape
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at 1160 nm. 100 scans with sweep times of 50 ms
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the same built and contribute equally to the residual
noise. Contribute to the equally residual noise.
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Climate chamber temperature [°C]
The $,#Ÿ $,Ÿ PRO unites TOPTICA’s wellestablished DL pro laser head with its
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to its low noise and drift values, the
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linewidths and better stability.
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intuitive touch, dial and total remote
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control electronics, the DLC pro, leads to a
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acoustic resonances can be detected.
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inside a climate chamber).
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DL pro HP laser head.
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tunable output
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Small variations of the laser diode current or its temperature can cause a
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The new DLC DL pro HP diode laser
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output power from visible or UV ECDLs,
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405 nm, 425 nm and 633 nm. Other
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640 nm are available on request.
0RECONÚGUREDŸLASERŸSYSTEM
The DL pro HP laser head features
two inputs with protection circuit for
fast AC & DC modulation of the laser
diode current. These are typically
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most convenient operation via touch
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frequency stabilization (p. 49)
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Power [mW]
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Over the last few years, TOPTICA has
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based on pro WHFKQRORJ\ 7KLV KDV
resulted in ECDL lasers with optimized
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of DL pro lasers. This is not only needed
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TOPTICA offers a special narrow-linewidth
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so far and demonstrated live at LASER
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further stabilization techniques (also see
measurement below).
Motorization of coarse tuning
The DL pro can also be equipped with
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the control box or simply via a RS 232
interface. Software commands set the
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bandwidth of the diode, with an accuracy
of approximately 0.2 nm.
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repeatability of the laser frequency is better
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laser of choice is the new DLC CTL laser
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Special optics or mechanics
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the laser head. One example is the addition
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TOPTICA offers such specials with the
DLC DL pro.
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for specials.
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Available specials for DL pro systems:
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measured
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369 .. 637 nm
637 .. 1770 nm
394 .. 637 nm
3 .. 45 mW
10 .. 300 mW
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2 .. 140 nm
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15 - 30 °C / 0 - 40 °C
Humidity
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Size head (H x W x D)
90 x 90 x 240 mm3
Size electronics DLC pro (H x W x D)
154 x 450 x 348 mm³
Power consumption with DLC pro
35 W
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780
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840 - 875 nm
910 - 985 nm
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30 - 80 mW
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30 - 80 mW
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30 - 50 GHz
30 - 50 GHz
30 - 50 GHz
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401 - 409 nm
420 - 424 nm
637 nm
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40 mW (100 mW upon request)
30 mW
35 mW
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ECDL laser systems world-wide have
been of the SYST DL pro type. Fascinated
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the performance of the DL pro, some of
the most sceptical “home-builders” have
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the DL pro. Results include dramatically
reduced times between the start of an
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system uptime and more motivated and
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1770 nm, to its maximum power
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well as stable and easy operation, and
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customized systems.
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of the SYS DC 110 series. In addition
to the standard modules for current,
temperature and piezo control, the
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“add-on” modules for laser stabilization.
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TOPTICA’s versatile and fast solution for
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110 provides the fastest commercially
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increases uptime especially in experiments with
many lasers.
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SYST DL pro laser system. Stable and easy to use
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DL pro lasers are also available with
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DLC pro. These systems are named
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• Available between 369 nm .. 1770 nm
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• Fast current AC & DC modulation
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27
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Conventional and Economic Tunable Diode Lasers
Principle of operation
The well-proven performance of the DL
100 results from its Littrow-type external
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experiments, from simple absorption
spectroscopy to multi-species BECs.
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quantum optics experiments.
Key Features
• :LGHVWZDYHOHQJWKFRYHUDJH
369 .. 1770 nm
• +LJKSRZHUXSWRP:
• 0RGHKRSIUHHWXQLQJXSWR*+]
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• AR and FP diodes
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0LFURPHWHUVFUHZVSHUPLWFRDUVHPDQXDO
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are driven by a piezo actuator.
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The laser resonator is thermally stabiOL]HG E\ PHDQV RI D 3HOWLHU FRROLQJ HOHment, connected to the DTC 110 Diode
Temperature Control.
Low noise operation of the DL 100 is
achieved by means of the Diode Current
Control DCC 110. In addition, TOPTICA
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stabilize the laser frequency (for a full
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Modular design
The DL 100 diode laser head comSULVHV D PRXQWLQJ EDVH ZKLFK VHUYHV DV KHDW VLQN D WHPSHUDWXUH VHQVRU DQG 3HOWLHU FRROLQJ HOHPHQW IRU
active temperature control, a laser base
plate, a laser diode holder with a collimator
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The laser diode itself can be easily
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DL 100 is available with AR and FP-type
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Linewidth of DL 100, determined with a delayed
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28
lower cost, while AR-coated diodes offer
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behavior and narrower linewidths. The
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to meet any application requirement.
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complete the modular electronics setup.
Hands-on setup
The DL 100 has evolved in research
laboratories and therefore offers the
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environment. For instance, all important
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user access, TOPTICA can also provide
“hands-off” laser systems.
Reasonably priced
A DL 100 laser system is the most
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of Tunable Diode Lasers”.
If even more stable and convenient
operation is required, the DL pro systems
are the recommended alternatives.
Options
• Optical isolators
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• DC / AC coupled modulation board
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DL 100 frequency sweep over four Rb absorption
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FSR 1 GHz) are shown for reference.
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7IDEŸTUNINGŸWIDEŸWAVELENGTHŸRANGE
DL DFB lasers unite wide tunability, narrow
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provides both diodes and systems at any
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lasers exhibit an exceptional stability and
reliability. Our customers have successfully employed DL DFB lasers under the
most adverse environmental conditions –
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even in airborne experiments.
VHG diodes in the visible range
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frequency emission, independent of
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633 nm and 685 nm, VHG diodes lend
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Options
Frequency tuning
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current ('Ȟ/'I ~1-5 GHz/mA). Thermal
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,ASERŸHEADSŸFORŸDIFFERENTŸPACKAGES
Two versions of DL DFB laser heads
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head incorporates DFB or VHG diodes
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miniaturized thermoelectric elements heat,
cool or stabilize the laser temperature.
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linewidth manipulation.
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Key Features
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SYS DC 110 electronics
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633 nm .. 685 nm, 760 - 3500 nm
• +LJKRXWSXWSRZHUVXSWRP:
• 0RGHKRSIUHHWXQLQJXSWR
1200 GHz (@ 780 nm)
or 4 nm (@ 1550 nm)
• Reliable operation even in harsh
environments
• DL DFB BFY: Compact mount for
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• Optical isolators
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• %HDPVKDSLQJ
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• DC / AC coupled modulation board
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Wavelength (nm)
857
856
1175 GHz
855
854
0
10
20
30
40
50
Temperature (°C)
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Absorption spectrum of water vapor, recorded
with a thermally tuned DL DFB at 935 nm.
29
/PTIONSŸ4UNABLEŸ$IODEŸ,ASERS
DL Series Laser Head Options
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APP compact
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Narrow linewidth
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Fiber coupler: FiberDockTM
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SRODUL]DWLRQPDLQWDLQLQJÛEHUVLQFOXGLQJÛEHURSWLFEHDPVSOLWWHUV2SWLFDOLVRODWLRQLVPDQGDWRU\IRU
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,VRODWRUVDUHXVHGWRSURWHFWWKHODVHUGLRGHDJDLQVWEDFNUHÜHFWLRQV7KLVQRWRQO\SUHYHQWVGDPDJHWRWKH
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)LEHUFRXSOLQJZLWKDQJOHSROLVKHGÛEHUVERWKHQGVUHTXLUHVDWOHDVWDVLQJOHVWDJHLVRODWRU
$OUBLESTAGEŸISOLATORŸ)SOLATORŸŸD"
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Adjustable anamorphic prism pair: APP J
TOPTICA’s patented adjustable anamorphic prism pairs are used to expand or compress a laser beam
in one direction, by a factor between 2 and 5. The main application is to render an elliptical diode laser
beam circular.
#OMPACTŸPRISMŸPAIRŸFORŸBEAMŸCOMPRESSIONŸ!00ŸCOMPACT
The compact prism pair is used for beam compression only. The compressed circular beam is small
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approximately 10 %. The compression ratio is set at the factory.
Narrow linewidth
With this option DL pro laser systems are optimized for narrow linewidths. It is also suited for seed lasers of
TA or NLO systems but not for DL pro HP lasers.
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The PCB includes AC and DC-coupled current modulation inputs on the laser head.
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It is also suited for seed lasers of TA or NLO systems but not for DL pro HP lasers.
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This option is available for most DL pro laser systems (most AR laser diodes and some FP diodes).
30
www.toptica.com
3PECIÚCATIONS
Tunable Diode Lasers
Class 3B Laser Product EN 60825-1:2007. Visible or insible laser radiation.
Avoid direct exposure to beam. Caution - Class 3B visible or insivisble laser
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3PECIÚCATIONS
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369 .. 517 nm
632 .. 1770 nm
633 .. 685 nm
760 .. 3500 nm
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3 .. 300 mW
2 .. 150 mW
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2 .. 140 nm
2 .. 4 nm
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20 - 50 GHz
1000 GHz
10 - 50 GHz
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0+]
Typical output beam characteristics
0+]
3 mm x 1 mm (1 mm x 1 mm with APP C)
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50 ± 0.3 mm
53.9 ± 0.5 mm
Typical polarization
Linear, approx. 100:1
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55 (65) %
)LEHUFRXSOLQJHIÛFLHQF\ZLWK$33PLQW\S
65 (75) %
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0+.
0+.
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0+.
15 - 30 °C
Environment temperature (transport)
0 - 40 °C
Humidity
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100 - 120 V / 220 - 240 V AC, 50 - 60 Hz (auto detect)
Size head (H x W x D)
90 x 90 x 240 mm³
79.4 x 80 x 228 mm³
79.4 x 80 x 228 mm³
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DL pro / DL 100
DL pro HP
Power [mW]
100
DL DFB
10
1
0.1
400
500
600
700
800
900
1000
1100
2000
3000
Wavelength [nm]
(OWŸTOŸCHOOSEŸYOURŸ$,ŸSERIESŸCONÚGURATIONŸ
1.
&KHFNLI\RXUGHVLUHGZDYHOHQJWKLVDYDLODEOH
as a TOPSeller. Unless you require special
properties from your laser, TOPSellers are
often the most suitable solution.
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2.
If your requirements are different from a
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diode (FP, AR, DFB – please see p. 10 - 11).
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Inquire directly with TOPTICA for all other
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Contact your local TOPTICA representative
for further information about options and a
customized quote.
31