Delta Developments



CW Laser Power Measurements
These all use integrating spheres.   There are two standard types of detector: Thin Film Thermopile (Broad Band) and Silicon.   The Broad Band models (M55, M69, M68) are the normal ones to use for most applications.   However, the Silicon Diode Instrument (M29) can go to lower power levels and has the possibility of showing the pulse shape of repetitively pulsing lasers.
Model 55 Standard Broad Band CW Meter (1mW–1W, 400nm–1.5µm, 18mm Aperture) (includes Battery Powered Indicator Unit with Analogue Meter and Charger) £1300
Model 69 x10 Broad Band Power Meter (10mW–10W, 400nm–1.5µm, 25mm Aperture) (includes Battery Powered Indicator Unit with Analogue Meter and Charger) £1580
Model 68 x100 Broad Band Power Meter (100mW–100W, 400nm–1.5µm, 35mm Aperture) (includes Battery Powered Indicator Unit with Analogue Meter and Charger) £1840
Model 29 Silicon Detector Head (30µW–10mW, 350–1100nm, 18mm Aperture) (includes Battery Powered Indicator Unit with Analogue Meter and Charger) £1450
When ordering, please give the range of laser powers and main wavelengths .
All Prices include calibration to ±1.8% traceable to UK National Physical Laboratory.
Options
Model 29 can have Ge or GaInAs detectors for different spectral ranges enquire
Special Heads for Larger Beams or different Power Ranges are available enquire
We also offer a Pyroelectric Head to measure CW CO2 lasers (needs a chopper) enquire
Alternative indicator units
Analogue Meters are better than Digital for setting up, beam finding or laser adjustment.
CW/2 Digital Readout Meter (Alternative to standard Analogue Meter) £300 extra
CW/3 * IEEE-488 interface to send results to computer £490 extra
CW/4 * RS232 interface to send results to computer enquire

Calibration Services

We offer a calibration service for our own Instruments. We also can calibrate other Manufacturer’s Instruments when these are of suitable design. Please see Separate Web Page for details and prices of the Calibrations we can offer.


Peak Power Measurements

(1) The price for the Heads LD, SD and SD60 includes the Battery Pack to bias them.

(2) Heads MD, HD, SL or HL need either a Stand Alone PSU OR a Module Power Rack.

(3) Modules PPM/1 or PPM/2 need the Module Power Rack.

These prices are for Si (400-1070nm).   For GaInAs (950-1600nm) add £300
LD Low Sensitivity Diffusing Head + Battery Bias Box 1mV/W £1650 (1)
SD Standard Diffusing Head + Battery Bias Box 10mV/W £1590 (1)
SD60 60 mm Aperture Diffusing Head + Battery Bias Box 10mV/W £1910 (1)
MD Medium Sensitivity Diffusing Head (needs Power Supply (2)) 100mV/W £1590
HD High Sensitivity Diffusing Head (needs Power Supply (2)) 1.0V/W £1590
78 Small Fast Diffusing Head (needs Power Supply (2)) 1.6mV/W £1590
78A Small Diffusing Head (needs Power Supply (2)) 35mV/W £1590
SL Standard Lens Head (needs Power Supply (2)) 100mV/µW/cm2 £1590
HL High Sensitivity Lens Head (needs Power Supply (2)) 1.0mV/µW/cm2 £1970
All these Heads must have a 50 Ohm load (either a ’Scope or one of our Peak Power Modules).  Prices include calibration at one wavelength of your choice giving ±2.2% traceable to UK National Standards.
Re-calibration of Heads Most Defence Authorities require this re-calibration to be done annually. Turn around is usually only a few days. typically £400-£500 each.
Options for Peak Power Measurements
PPM/1 * Peak Power Module (Digital Readout of Peak Power) (3) £1300
PPM/2 * Mean Power Module (Digital readout of Mean Power) (3) £700
PPM/3 * Separate DVM with IEEE-488 (Sends readings to computer) £550
Stand Alone PSU (Powers Heads MD, HD, SL, HL) £350
Module Power Rack (Powers Heads MD, HD, SL, HL and Measurement Modules) £860

Pulsed Laser Energy Measurements

Prices include Calibration at one wavelength of your choice giving ±2.2% traceable to UK National Standards.

(1) The price for the Heads M27, M49 and M50 includes the Battery Pack to bias them.

(2) To use Head M32 you must also buy either the Stand Alone PSU OR the Module Power Rack.

(3) To use Modules M19 or PPM/1 you must buy the Module Power Rack.


    Power Source    
M27 Pulsed Laser Head Battery Pack Pulse Shape + Energy Meas. (0.3–1.06µm) £1320 (1)
M49 Lensed Head Battery Pack Pulse Shape + Energy Meas. (0.3–1.06µm) £1320 (1)
M50 Fibre-Optic Head Battery Pack Pulse Shape + Energy Meas. (0.3–1.06µm) £1320 (1)
M40 Control Unit for M27, M49 & M50 Internal Batt. Captures Energy values only £900
M40/1 Meter with IEEE   Sends readings from M40 to computer £500
M32 Pyro-electric Head PSU or Rack (2) Energy Meas. only (0.6–4µm) Enquire
M19 * Digital Data Acquisition Module Rack (3) for M27 or M32 Heads £900
PPM/1 * Peak Power Module Rack (3) Digital Readout of Peak Power £1300
Stand Alone PSU       £350
Module Power Rack       £860
Pulsed Laser Energy Meter
PLEM Pulsed Laser Energy Monitor   £3200
This is a complete system with Beam-splitter for 0.3-1.06µm with one calibrated range plate and an analogue meter.
Options for PLEM
PLEM/1 * Extra Range plate Price includes calibration at extra wavelength £350
PLEM/4 * Meter with IEEE interface Sends readings to computer £500

Laser Driver or Controller
LD1 Control Unit for 14 pin DIL Laser in Power Rack (Photo-diode or Current control) £1550
LD1A Control Unit for 14 pin Butterfly Laser in Power Rack (Current Control only) £ 1650
LD2 Extra 14 pin Control Modules (up to 3 Control Modules per Power Rack) £ 800
LD2A Extra Butterfly Control Modules (up to 3 Control Modules per Power Rack) £ 800
LD3 IEEE Monitoring/Control Module (only two Modules with IEEE) Enquire

Boxcar Integrators
M81 Basic Chopped Signal Integrator. This is a simple Boxcar Integrator for the chopped signal from Pyroelectrics, photomultipliers etc.
It is a good low cost option when the high cost of a full lock-in system is not justified.
 £2200
 Options for CSI
M81/1 * Count-down Module (choose a lower PRF but still locked to the supply) £ 500
M81/2 * DVM with IEEE interface (sends readings to computer) £ 500
CH1 Chopper for general use (various open/closed times available) £ 500
CSIA Faster system (aperture times down to 15ns, digital smoothing) £3500 (typical)

Amplifiers
A3 X3.1 Amp. for Photon Drag Input imp. 50 Ohms,
Drives 50 Ohm ’Scope
£550
A10 X10 Amp. for Photon Drag Input imp. 50 Ohms,
Drives 50 Ohm ’Scope
£550
A100 X100 Amp. for Photon Drag Input imp. 50 Ohms,
Drives 50 Ohm ’Scope
£550
M67 Ultra Low Noise Amps for Calorimeters Spec. to be agreed.
Typically G=x100. 100nV P-P
typically £800
T.B.A. AC Powered Amps Customer's application Gain and bandwidth to be specified on ordering typically £800

Notes and Conditions

  1. These Prices are for our Standard Instruments.   Prices for variants may be slightly different. All Prices are in UK Pounds (£).   These prices are F.O.B. Hampshire UK and do not include freight or insurance to your site.
  2. Please give us as much detail as possible of your laser (wavelength, pulse duration, power, energy, repetition rate, beam size).   Also the local AC supply voltage.
  3. * against Model or Option No. means that it can be bought and fitted retrospectively.
  4. All our products carry a one year guarantee (F.O.B. Hampshire, UK).   Please note, however, that this does not include damage to beam splitters or diffusers caused by excessive laser power density.   All these upper limits are given in the Specifications in the Brochures and Instruction Manuals.
  5. Payment: Our Standard terms are for payment within 30 days of date of dispatch from Liss.   If you want different terms (e.g. ‘30 days Nett’ or payment in advance) please advise and we will change the Quotation appropriately.
  6. Letters of Credit.  We regret we must charge £400 on all Invoices paid to us by ‘Irrevocable Letter of Credit’.  This is to cover our costs for this quite ridiculously complex method of payment (Bank fees, Consulate fees, Financing the slower payment, Chamber of Commerce fees, Fees for ‘Certificate of Origin’ and our own time spent in Administration).   For some Banks, where our experience shows that they are obsessively bureaucratic or pedantic, the charge may need to be even more.