Ultraviolet to Infrared Picosecond Diode Laser Heads  Voted Top Ten at CLEO 2000 LDH 375 to 1550 

Laser Head Specifications (typical values)

Beam Parameters  
Optics focus length f' = 4.5 mm
Numerical aperture 0.55
Typical divergence Theta parallel 0.32 mrad
(with optics) Theta perpendicular 0.11 mrad
Polarisation typ. linear, perpendicular to the longer axis of the elliptical beam
Polarisation degree > 90%
Sidemode suppression ratio (SMSR) <0.01
    
Cooling  
Peltier cooling stability better than 1 K for ambient temperature between 15°C and 30°C
    
Dimensions   
Cooled 110 × 75 × 60 mm (l × w × h) - See layout
Cooled with fibre coupling 145 × 75 × 60 mm (l × w × h) - See layout
Uncooled 25 × 76 mm (diameter × length with collimator) - See layout
Uncooled with fibre coupling 25 × 106 mm (diameter × length with collimator) - See layout
    
Spectral width approx. 2-8 nm for wavelengths < 900 nm
  approx. 10-20 nm for wavelengths > 900 nm
  <1 nm in cw operation
   
Power stability (cooled)  
12 hour, Delta T (ambient) <3 K 1 % RMS
  3 % Peak to Peak
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Beam Shape and Fibre Coupling

All laser heads emit a collimated elliptical beam with typical dimensions of 1.5 × 3.5 mm. They can be optionally fitted with single mode, polarisation maintaining single mode or multi mode optical fibres through appropriate fibre couplers. Different fibre connectors at the fibre output are available (FC/PC, FC/APC and SMA). For details, please see the corresponding webpage.

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Available wavelengths (pulsed mode, LDH-P Series)

These laser heads can only be driven either by the PDL 800-B, PDL 800-D, PDL 808 "Sepia" or PDL 828 "Sepia II" driver units.

    Power Adjust = Low (Narrow Pulse) Power Adjust = High (Wide Pulse)
Wavelength
nm ( ± 10)
Type Pulse FWHM
ps
Average Power
mW (@ 40 MHz)
Average Power
mW (@ 80 MHz)
Pulse FWHM
ps
Average Power
mW (@ 40 MHz)
Average Power
mW (@ 80 MHz)
375 LDH-P-C-375 < 70 0.3 -- < 300 1.0 --
375 LDH-P-C-375B < 70 0.3 -- < 300 3.0 --
405 LDH-P-C-405 < 70 0.8 -- < 300 1.0 --
405 LDH-P-C-405B < 70 1.0 -- < 300 3.0 --
405 LDH-P-C-405M < 70 2.5 -- < 600 20.0 --
440 LDH-P-C-440 < 90 0.3 -- < 300 1.0 --
440 LDH-P-C-440B < 70 0.3 -- < 500 3.0 --
440 LDH-P-C-440M < 70 3.0 -- < 500 20.0 --
470 LDH-P-C-470 < 90 0.3 -- < 300 1.0 --
470 LDH-P-C-470B < 90 0.3 -- < 500 3.0 --
485 LDH-P-C-485 < 90 0.3 -- < 500 2.0 --
635 LDH-P-635 < 90 0.3 0.6 < 400 2.5 4.0
640 LDH-P-C-640B < 90 0.7 1.5 < 400 4.5 9.0
655 LDH-P-650 < 70 0.4 0.9 < 400 3.0 6.0
660 LDH-P-660 < 90 0.5 1.0 < 500 5.0 10.0
670 LDH-P-670 < 70 0.3 0.7 < 300 1.0 2.0
665 LDH-P-670B < 90 0.3 0.7 < 400 2.0 4.0
690 LDH-P-690 < 70 0.5 1.0 < 400 4.0 8.0
705 LDH-P-705 < 70 1.2 2.5 < 400 5.0 10.0
735 LDH-P-730 < 130 0.3 0.6 < 400 1.7 3.5
757 LDH-P-760 < 90 0.4 0.9 < 300 3.0 6.0
785 LDH-P-780 < 70 0.5 1.0 < 500 5.0 10.0
806 LDH-P-810 < 90 0.4 0.9 < 500 5.0 10.0
830 LDH-P-830 < 70 0.3 0.6 < 300 4.0 8.0
835 LDH-P-840 < 90 1.0 2.0 < 750 6.0 12.0
850 LDH-P-850
on request
905 LDH-P-905 < 90 1.5 3.0 < 70 4.0 8.0
930 LDH-P-930 < 120 0.7 1.5 < 500 10.0 20.0
952 LDH-P-950 < 90 0.2 0.4 < 400 2.0 4.0
975 LDH-P-980 < 90 0.6 1.2 < 750 10.0 20.0
1025 LDH-P-1025
on request
1060 LDH-P-1060 < 90 0.5 1.0 < 550 10.0 20.0
1310 (± 25 nm) LDH-P-1310 < 50 0.01 0.02 < 400 0.5 1.0
1550 (± 30 nm) LDH-P-1550 < 50 0.01 0.02 < 400 0.5 1.0

Option "B": High Power version
Option "C": Laser head with thermoelectric cooler, mandatory for some laser heads, optional for all other laser heads
Option "M": Transversal multi mode structure, reduced coupling efficiency into single mode fibres
All measurements may be subject to a 10% calibration error.

The two power adjustment levels specified here refer to the same laser head. These levels can be adjusted using the corresponding driver (PDL 800-B, PDL 800-D, PDL 808 or PDL 828). The 'Low' adjustment is the best choice for shortest pulses and is usually reached close to the lasing threshold. The 'High' adjustment is used to achieve highest pulse power at moderate pulse length and corresponds to the maximum intensity setting of the driver. back to top



Available wavelengths (dual mode: cw and pulsed, LDH-D Series) 

These laser heads can only be driven by the PDL 800-D or the PDL 828 "Sepia II" driver.

      Power Adjust = Low (Narrow Pulse) Power Adjust = High (Wide Pulse)
Wavelength
nm ( ± 10)
Type CW Power
mW
Pulse FWHM
ps
Average Power
mW (@ 40 MHz)
Average Power
mW (@ 80 MHz)
Pulse FWHM
ps
Average Power
mW (@ 40 MHz)
Average Power
mW (@ 80 MHz)
375 LDH-D-C-375 10 < 70 0.3 -- < 300 3.0 --
405 LDH-D-C-405 20 < 70 1.0 -- < 300 3.0 --
405 LDH-D-C-405M 400 < 70 2.5 -- < 600 20.0 --
440 LDH-D-C-440 20 < 70 0.3 -- < 500 3.0 --
440 LDH-D-C-440M 400 < 70 3.0 -- < 500 20.0 --
470 LDH-D-C-470 10 < 90 0.3 -- < 500 3.0 --
485 LDH-D-C-485* 10 < 90 0.3 -- < 500 2.0 --
640 LDH-D-C-640 20 < 90 0.7 1.5 < 400 4.5 9.0
660 LDH-D-C-660 30 < 70 0.7 1.5 < 500 4.5 9.0
670 LDH-D-C-670 15 < 70 0.4 0.8 < 600 4.0 8.0
690 LDH-D-C-690 20 < 70 0.5 1.0 < 500 4.0 8.0
730 LDH-D-C-730 8 < 120 0.3 0.7 < 800 1.7 3.5
other wavelengths are available upon request
*different coupling efficiency into optical fibres for pulsed and cw operation due to astigmatism

Option "C": Laser head with thermoelectric cooler
Option "M": Transversal multi mode structure, reduced coupling efficiency into single mode fibres
All measurements may be subject to a 10% calibration error.

The two power adjustment levels specified here refer to the same laser head. These levels can be adjusted using the corresponding driver (PDL 800-D or PDL 828). The 'Low' adjustment is the best choice for shortest pulses and is usually reached close to the lasing threshold. The 'High' adjustment is used to achieve highest pulse power at moderate pulse length and corresponds to the maximum intensity setting of the driver.

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Available wavelengths - narrow spectral bandwidth

These laser heads can only be driven either by the PDL 800-B, PDL 800-D, PDL 808 "Sepia" or PDL 828 "Sepia II" driver units.

Wavelengths Power Adjust = Low (Narrow Pulse)   Power Adjust = High (Wide Pulse)
Central
nm
Variation
nm
Spectral FWHM
nm
Pulse FWHM
ps
Average Power
mW (@ 40 MHz)
Average Power
mW (@ 80 MHz)
Pulse FWHM
ps
Average Power
mW (@ 40 MHz)
Average Power
mW (@ 80 MHz)
772 ±3 <1 <120 1.2 2.5 <350 3.5 7.0
784 ±3 <0.3 <100 0.9 1.6 <500 4.0 8.0
852 ±3 <0.3 <90 2.0 3.5 <350 5.0 9.0
860 ±3 0.2 <90 1.2 2.0 <400 8.0 15.0
1062 ±3 0.4 - 0.8 <120 0.7 1.4 <400 5.0 10.0
1275 ±7 0.2 <100 0.01 0.03 <400 0.5 1.0
1300 ±7 0.2 <100 0.01 0.03 <400 0.5 1.0
1310 ±20 0.2 <100 0.01 0.03 <400 0.5 1.0
1325 ±7 0.2 <100 0.01 0.03 <400 0.5 1.0
1349 ±7 0.2 <100 0.01 0.03 <400 0.5 1.0
1417 ±3 0.2 <100 0.01 0.03 <400 0.5 1.0
1490 ±3 0.2 <100 0.01 0.03 <400 0.5 1.0
1510 ±3 0.2 <100 0.01 0.03 <400 0.5 1.0
1530 ±3 0.2 <100 0.01 0.03 <400 0.5 1.0
1550 ±3, ±20 0.2 <100 0.01 0.03 <400 0.5 1.0
1570 ±3 0.2 <100 0.01 0.03 <400 0.5 1.0
1590 ±3 0.2 <100 0.01 0.03 <400 0.5 1.0
1610 ±3 0.2 <100 0.01 0.03 <400 0.5 1.0
Available upon request: 763, 780, 923 and 937 nm (± 3 nm) / pigtailed FBG-diodes: 976 and 1064 nm
All measurements may be subject to a 10% calibration error. Please call for details and availability.back to top


Available wavelengths - short pulses (on selection)

These laser heads can only be driven either by the PDL 800-B, PDL 800-D, PDL 808 "Sepia" or PDL 828 "Sepia II" driver units.

Wavelength
nm (+/-10)
typ. pulse FWHM
ps
Average Power
mW (@ 40 MHz)
Average Power
mW (@ 80 MHz)
655 54 0.4 0.9
670 39 0.3 0.7
690 54 0.5 1.0
785 54 0.5 1.0
830 44 0.3 0.7
All measurements may be subject to a 10% calibration error. Please call for details and availability. back to top


Pulse-to-pulse jitter

The image on the right shows a typical measurement result of the pulse-to-pulse jitter. In this case the measurement result is 2.6 ps.

A range of sub-nanosecond pulsed LEDs is also available e.g. for time-resolved fluorescence experiments not requiring coherence.

All Information given here is reliable to our best knowledge. However, no responsibility is assumed for possible inaccuracies or ommisions. Specifications and external appearences are subject to change without notice.
© PicoQuant GmbH, 1998 - 2006


last updated 06.10.2008back to top

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