sábado, 30 de enero de 2010

Laser Diodes


TOPTICA SCIENTIFIC DIODE LASERS


Toptica


TOPTICA Photonics' Scientific Diode Lasers cater to the vast majority of spectroscopic applications in physics, chemistry and life sciences. The fact that TOPTICA develops and manufactures customized adaptations and modifications in-house is one of our principal strengths. All the Scientific Diode Lasers take advantage of our modular Laboratory Electronics


PICOQUANT PULSED LASER DIODE SYSTEMS


PicoQuant is the supplier of choice for small and reliable picosecond pulsed diode lasers with up to 80 MHz repetition rates. Laser heads with wavelengths from 375 to 1550 nm and pulsed LEDs between 260 and 600 nm can be provided. A large variety of driver electronics for all types of diode lasers are available for a wide range of applications including modulation (up to 2 GHz) and long pulse generation (nsec to µsec)


NLIGHT LASER DIODE BARS AND ARRAYS
nLIGHT




nLIGHT is a leading supplier and innovator of high-power semiconductor lasers and fibers for industrial, medical, defense and consumer applications. Our solutions offer a competitive advantage in performance, reliability and efficiency. The following products are representative of nLight’s superior device capabilities and performance.  nLight’s semiconductor diode lasers are designed and manufactured to meet custom high-performance and high-reliability requirements.


JENOPTIK LASERDIODE HIGH BRIGHTNESS LASER DIODES


jenoptik


We offer a wide array of high quality bar-based diode lasers with great thermal capacity ranging from lasers in open heatsink design to fiber-coupled diode lasers as well as vertical and horizontal diode laser stacks with wavelengths of 808 nm, 915 nm, 940 nm or
976 nm. Beginning at 30W, our high-power diode lasers are available up to several hundred watts for both constant and pulsed operation.
In addition to our line of standard products, we also work in direct cooperation with our customers to find individual product solutions to their business needs.
We strive for long-lived products that are every bit as dependable as they are durable - two standards of judgement that only gain on importance. Our products have a expected lifetime of 10,000 to 20,000 hours and more. This expectancy has been proven through extensive tests resulting in degradation of only 0.2 to 0.8 percent per 1,000 hours of operation.
Our diode lasers are each tested individually before delivery which assures the impeccable state of each and every one of our products. All of our standard products have a warranty of 12 to 24 months.
You will find a description of all of our standard products on this website. Should you have unanswered questions or wish to consult with a member of our competent sales team, please contact us by any of the means listed below.
We are here to help you find the right laser for your business needs.



  • Grating-stabilized diode lasers 
  • Littrow design 
  • DFB diodes 
  • Broadest wavelength coverage worldwide 
  • Narrow linewidth

Tunable
TOPTICA introduced its first tunable diode laser systems in 1995. Ever since, we have been dedicated to stay ahead in terms of power, wavelength coverage and variety. We scan the market for available laser diodes and cooperate with numerous manufacturers to supply customized new wavelengths and powers. At present our laser diodes cover the range from 373 to 3000 nm with only few gaps and more wavelengths are continuously being added. In addition, well-equipped testing facilities for diode characterization and lifetime measurements ensure accurate specifications, reliable laser operation and constant high quality.






  • CW, narrow linewidth source for spectroscopy 
  • Highest output power available 
  • Exceptional long term stability 
  • Comprehensive and continuous wavelength coverage 
  • High modulation rates 
  • Adaptable to all standard laser diode wavelengths 
  • Modular design with hands-on set-upOptions 
  • Optical isolation 
  • Fiber coupling (FiberDock) 
  • High frequency modulation 
  • Beam shaping 
  • Locking electronics

Toptica




DL DFB: WIDELY TUNABLE DISTRIBUTED FEED-BACK LASER MODULE




  • High output power (up to 150 mW) 
  • Large mode-hop free tuning range (up to 1200 GHz) 
  • Single-frequency operation (linewidth typ. 2 MHz) 
  • Wide range of wavelengths available, including 760 nm, 780 nm, 785 nm, 852 nm, 935 nm, 1064 nm, 1550 nmOptions 
  • Optical isolation 
  • Fiber coupling (FiberDock) 
  • High frequency modulation 
  • Beam shaping 
  • Locking electronics

DL DFB

Distributed feedback (DFB) laser systems offer wide tunability, narrow linewidth and high output power in a compact and very rugged setup. In a DFB diode, the frequency selective element – a Bragg grating – is integrated into the active section of the semiconductor. Thus, single-frequency operation and high coherence (coherence length 50 - 200 m) are obtained without any bulk optics, making DFB lasers particularly suitable for use within harsh industrial environments or for airborne applications.

A DFB diode can be tuned by changing either the temperature (typical tuning rate 25 GHz/K) or the operating current (1 - 2 GHz/mA). While current-tuning is favourable for rapid modulation tasks, thermal tuning has the advantage of providing extremely large mode-hop free tuning ranges (up to 1200 GHz).
To make full use of the attractive properties of DFB lasers, TOPTICA Photonics has developed the DL DFB laser system, where the laser diode is placed in our patented 
ColdPack housing. Four thermoelectric elements serve to stabilize laser temperature, or alternatively rapidly heat or cool the diode (temperature range 0-50 °C). State-of-the-art control electronics guarantee low-noise performance and maximum flexibility to adapt the system to the user’s requirements.
DFB lasers are available at a wide range of wavelengths, including 780 nm, 785 nm, 852 nm, 895 nm, 935 nm and 1064 nm. Applications include alkaline spectroscopy (Rb, Cs), laser cooling, gas detection (O
2, H2O) and the generation of tunable Terahertz (THz) radiation.
 
Technical Information: 
Specifications DL Series






  • Widely tunable external cavity diode laser 
  • Ultra stable resonator design 
  • Lowest drift 
  • Easily tunable 
  • Max. output power 80 mW 
  • > 50 GHz mode-hop free tuning 
  • Optimized virtual pivot point 
  • Beam angle compensation mirror and fast current modulation includedOptions 
  • Optical isolation 
  • Beam shaping 
  • Fiber coupling (FiberDock) 
  • Locking electronics

DL Pro


The DL pro combines extended tunability with highest stability, two previously incompatible characteristics of external cavity diode lasers. This is possible only due to TOPTICA's innovative mechanical design. Based on a novel engineering approach, it provides much reduced susceptibility against environmental acoustic noise. Special care has been taken also in choosing dimensions and materials to reduce frequency shifts caused by variations of the ambient temperature. The laser can easily be set to any wavelength within the specified tuning range of 30 nm. An optimized pivot point leads to a modehop-free scan range so far unmatched by any other commercial Littrow-type grating stabilized diode lasers. As the ideal laser for many demanding applications, the DL pro ensures TOPTICA’s leadership in the market for external cavity diode lasers for the years to come.Typical applications: 
  • High resolution laser spectroscopy 
  • Laser cooling & BEC 
  • Electromagnetically induced transparency 
  • Magnetometry




Specifications: 



TOPTICA HIGH POWER, AMPLIFIED LASER DIODES







  • Tunable, high power solutions 
  • Semiconductor amplifier 
  • External cavity diode lasers 
  • Proprietary "RockSolid" design 
  • More than 1 Watt output power

Amplified
In the past, the output of semiconductor lasers was limited and insufficient for a variety of applications. The facets of single-mode laser diodes (typically 1 x 3 ìm) suffer optical damage at high power levels, whereas with larger facets the desired spatial mode properties cannot be maintained. Powerful tunable CW light could thus only be generated with vast solid-state lasers or dye ring laser systems alongside with expensive pump sources.

TOPTICA managed to overcome these limitations with the development of the tapered amplifier TA 100. This laser system, introduced in 1998, offers not only high power, but also excellent beam quality and an extremely narrow linewidth. Researchers further benefit from convenient tunability, lowest operational costs and long lifetimes.


New: RockSolid Technology 
  • Power up to 1 W 
  • Center wavelengths 766, 780 nm
    (795, 852 nm under development) 
  • Single spectral and spatial mode 
  • Widely tunableOptions 
  • Integrated optical isolator 
  • Fiber coupling (FiberDock) 
  • Probe beam 
  • Direct fast current modulation 
  • Locking electronics

rocksolid
TOPTICA's DLX 110 RockSolid diode laser system is an outstanding tool for any application in high-resolution spectroscopy due to its exceptional narrow linewidth and extreme wavelength stability. The DLX 110 RockSolid features up to 1 W output power at selected wavelengths with single frequency and single spatial mode emission. Fine-tuning is accomplished by an internal piezoelectric drive.

The RockSolid technology reduces the acoustic and vibrational sensitivity of the DLX by a factor of approx. 100 compared to conventional external cavity diode lasers. It approaches the stability of real monolithic laser resonators.

The factory-preset wavelength can be set on request to any wavelength in the range 6 nm with respect to the center wavelength. The DLX 110 RockSolid is very attractively priced and optionally incorporates an internal output isolator (35 or 60 dB), high frequency modulation input and a probe beam output. It is also available with TOPTICAs outstanding 
fiber coupler (FiberDock). The laser system is complemented with a modular set of control electronics, which can be extended with sophisticated control electronics and locking modules from the establishedDL 100 series.

TA100 AMPLIFIED TUNABLE SINGLE-MODE DIODE LASER SYSTEM




New: 649 - 673 nm, up to 500 mW
The high power tunable coherent light source!
  • Up to 1.5 Watt output power 
  • Available wavelengths between 658 nm and 1083 nm 
  • Longitudinal single-mode 
  • Spectral linewidth typ. 300 kHz (5 µs) 
  • Tunable 
  • Near diffraction limited beam 
  • Excellent beam pointing stability 
  • Probe beam outputOptions 
  • Integrated output isolator 
  • Fiber coupling (FiberDock) 
  • Direct fast current modulation

TA100







BoosTA
BoosTA FiFo with output isolation, fiber input and fiber output coupling with TOPTICA's sophisticated FiberDock.
BoosTA




  • SHG, FHG, SFG 
  • Deep UV, blue, green, yellow ... 
  • All solid state laser systems 
  • CW, single-frequency output

Frequency Converted

Impressive though the success story of semiconductor lasers has been, there are still several spectral "gaps", wavelengths that cannot be directly accessed with laser diodes. However, nonlinear frequency conversion techniques can be employed to generate tunable laser radiation in the UV, blue and green spectral range. TOPTICA offers state-of-the-art laser systems based on second harmonic generation (SHG), sum frequency generation (SFG) and fourth harmonic generation (FHG).







Toptica




  • Continuous scan range > 40 GHz
    (@lambda = 800 nm)



  • Automatic re-lock feature



  • Low optical noise




  • Near-diffraction-limited mode quality




  • Excellent beam pointing stability




  • Lowest operational costs




  • Compact folded ring cavity with high mechanical and thermal stability




  • Wavelength range from 410 nm - 1600 nm (fundamental beam) available 

  • Options




The resonant doubling cavity SHG 110 can be easily adapted to provide optimum performance with any specified laser source. TOPTICA Photonics offers competent technical support for adapting the SHG 110 to customer requirements. Advantages of the Frequency Doubling Stage SHG 110




  • Ultra-stable, compact set-up with active resonator length stabilization
    (Pound-Drever-Hall scheme), Hänsch-Couillaud scheme on request




  • Very stable beam output position, ideal TEM00 beam profile




  • Modular set-up allows easy adaptation to the individual demands of the current experiment
If you require a complete laser system for a doubled wavelength in the range from 205 nm to 800 nm please visit the TA-SHG 110 or TA-FHG 110.


TA-SHG110
The system TA-SHG 110 comprises a tunable, grating-stabilized diode laser, a high power coherent amplifier and an external frequency doubling stage. The doubling stage is a folded ring cavity in bow-tie configuration with high mechanical and thermal stability. In combination with an active resonator length stabilization (Pound-Drever scheme), a good intensity stability is also realized. The combined system provides laser radiation particularly suitable for spectroscopic applications in atomic and chemical physics (narrow linewidth, collimated and polarized single mode beam, ideal TEM00 profile).

In addition, the resonant doubling cavity 
SHG 110 can be easily adapted to provide maximum flexibility with any specified laser source. The SHG 110 is thus readily combined with alternative laser sources such as TOPTICA's grating stabilized diode laser DL 100DLX 110 RockSolid.

One example is the FL-SHG, a system containing a high power, single frequency, tunable, cw fiber laser and the SHG module. TOPTICA offers powers greater than 400 mW at wavelengths between 520 nm and 560 nm with the FL-SHG.


TOPTICA also offers competent technical support for adapting the 
SHG 110 to existing laser systems. In this case the SHG 110 is being offered as a 'stand alone' module in a customized solution. If you require only a frequency doubling stage please visit the SHG 110.
General features



  • Tunable single-mode laser source



  • Up to 300 mW output power (TA based)



  • Up to 400 mW output power (FL based)



  • Low frequency and amplitude noise



  • Near-diffraction-limited mode quality



  • Excellent beam pointing stabilityOptions



  • Noise eater for TA based systems





The TA-FHG 110 is a complete laser system consisting of an external cavity diode laser (ECDL), a high power semiconductor optical amplifier and two second harmonic generation stages (SHG 110) for producing the fourth harmonic.

The FL-FHG utilizes a cw fiber laser instead of the ECDL and amplifier.

Together, these systems span the UV spectrum from 205 nm up to 280 nm with powers up to 100 mW.
  • Wavelength range 205 - 280 nm 
  • Transversal single-mode 
  • Tunable, single frequency 
  • Designed for ultra high resolution spectroscopy 
  • Laser linewidth 4 MHz,
    can be narrowed to kHz by active locking 
  • Optical output power up to 100 mW 
  • Modular design allows easy modification 
  • No external pump, no water cooling, highest efficiency 
  • Especially suited for spectroscopy of "practical" atoms, e.g. In, Ga, Si, Mg+, Cr, Au, Ag, Al, HeOptions 
  • Fiber coupling (FiberDock) 
  • Noise eater for TA based systems

UV




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