TopMode – Power and Coherence

    • For metrology, interferometry, Raman spectroscopy
    • Diode laser with best wavelength / coherence stability
    • Wavelengths: 405 / 445 / 488 / 515 / 633 / 685 nm
    • 100 mW single-frequency power @ 405 nm
    • Includes active coherence stabilization (CHARM)

     

TOPTICA’s new TopMode lasers operate as easily as a HeNe, but also offer higher power and blue wavelengths. The TopMode series sets records in terms of power, coherence and wavelength stability. The proprietary CoHerence-Advanced Regulation Method (CHARM) provides an active stabilization of the lasers’ coherence and ensures continuous single-frequency operation. TopMode and CHARM means nothing less than reliable 24/7 operation.

Specifications

Specifications

Free-space output of TOPTICA's TopMode laser cabinet. High-power versions are available at
405 nm and 488 nm.

 

380-hr-long-term-test of TopMode-405 with CHARM activated. The top trace shows the ambient conditions. The lower three traces depict laser power, wavelength and fringe visibility contrast, respectively. The laser remains highly coherent, without any mode-hops or multi-mode emission intervals

 

Specifications:

ModelTopMode 405TopMode 445TopMode 488TopMode 515TopMode 633TopMode 685
Operationcw, single (fixed) frequency
Wavelength405 nm443 nm488 nm514 nm633 nm685 nm
Wavelength tolerance ± 2 nm
Wavelength selectionupon request, accuracy 0.5 nm
Wavelength tuningNo
Wavelength stability *< 1 pm/h (< 0.5 pm/h typ.), peak-peak
Linewidth< 5 MHz (< 0.01 pm)
Coherence length> 25 m
CHARMActive coherence stabilization, included
ASE suppression40 dB typ.35 dB typ.
Output power,free-space  50 mW
(100 mW**)
 30 mW30 mW
(60 mW**)
  25 mW  50 mW (new)  25 mW
Output power, fiber-coupled 25 mW
(50 mW**)
15 mW 15 mW
(30 mW**)
15 mW  25 mW (new) 15 mW
Power stability *Typ. < 0.5% (STD/mean) / h
Intensity noise (RMS)≤ 0.1% @ 10 Hz – 10 MHz
PolarizationLinear, > 100 : 1, 90° (free-space version)
Beam shapeCollimated, circular, ∅ 1 mm, ellipticity < 10% ***
Spatial modeM² < 1.5 (< 1.2 typ.)
Optical isolationBuilt-in, > 30 dB
Laser head dimensionsFree-beam: 192 x 80 x 60 mm
Fiber-coupled: 218 x 80 x 60 mm
Fiber couplingOptional, typ. 60% in SM fiber
ElectronicsTopMode CHARM Control
Warm-up time< 10 min from standby
Environmental temperature (operating)Range 15 – 30 °C, stability ± 3 °C
Environmental temperature (transport)0 - 40°C
Humidity

non condensing

 * With CHARM activated

** Optional high-power version

*** In the far field, i.e. 2 m behind source. Note that the 488 nm laser has an elliptical beam profile.

 

 

Options & Related Products

Options & Related Products

Options:


Related products:

Technical Information

Technical Information

Dimensions laser head (H x W x D) Free-beam: 60 x 80 x 192 mm,
Fiber-coupled: 60 x 80 x 218 mm
Weight laser head 1.5 kg
Dimensions control unit (H x W x D) 45 mm x 480 mm x 290 mm
Weight control unit 4 kg
Power supply 100 .. 120 V / 220 .. 240 V AC, 50 .. 60 Hz (auto detect)
Power consumption typ. < 70 W, max. 150 W (incl. CHARM control)
PC Interface Ethernet, USB
Environment temperature 15 - 30 °C, stability +- 3 °C (operating)
0 - 40 °C (storage and transport)
Environment humidity Non-condensing

 

Technical Drawings

 

TopMode with free-beam output (PDF, 210 kB)

 

TopMode with SmartDock fiber coupler (PDF, 220 kB)

 

 

Applications

Applications

Owing to its excellent long-term coherence stability and outstanding single-mode behavior, the TopMode laser lend themselves to

Download

Download

Brochure: TopMode - Single-Frequency Diode Lasers
Brochure: TopMode - Single-Frequency Diode Lasers
toptica_BR_TopMode.pdf