PRODUCTS |  LASER LINE TUNABLE FILTER

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The incomparable efficiency and out-of-band rejection offered by our unique optical filtering technology are ideal for tunable excitation sources in fluorescence and Raman spectroscopy.

 

CHARACTERISTICS

  • Efficiency up to 60%

  • High out-of-band rejection

  • Wide tuning range

  • Free-space or fibre coupled

  • User-friendly control software

  • Up to 20W input power

  • Options & accessories available

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PRODUCT SPECIFICATIONS 

  CONTRAST VIS CONTRAST SWIR CONTRAST EXT-IV CONTRAST X

SPECTRAL RANGE
(extended and reduced spectral ranges also available**)
 

400 - 1000 nm 1000 - 2300 nm
(2500 nm optional)
400 - 2300 nm
(2500 nm optional)
where X represents
a custom spectral range
BANDWIDTH (FWHM)***  1.0 nm - 2.5 nm 2.0 nm - 5 nm ≤ 2.5 (<1000 nm)
≤ 5.0 (>1000 nm)
High resolution: 
0.15 nm - 0.9 nm
OUT OF BAND REJECTION**** < -60 dB @ ± 40 nm < -60 dB @ ± 80 nm
(measured up to 1.7 µm)
< -60 dB @ ± 80 nm
(measured up to 1.7 µm)
depends on the bandwidth
MAXIMUM INPUT AVERAGE POWER 
HP4: UP TO 4W 
HP8: UP TO 8W 
HP20: UP TO 20W
HP8, HP20 HP8, HP20 HP8, HP20 HP4
PEAK EFFICIENCY  typically around 65%
OPTICAL DENSITY (OD)  > OD6 (measured at 1064 nm) TBD
DAMAGE THRESHOLD  < 5 GW/cm2 peak power @ 1064 nm, 8 ns
INPUT APERTURE DIAMETER  5 mm
INPUT BEAM DIVERGENCE REQUIREMENT  < 1 mrad
WAVELENGTH RELATIVE ACCURACY  FWHM / 8
POINTING STABILITY  < 1mm lateral displacement @ 1 m from filter
SCANNING SPEED 
(MULTIPLE STEP) 

35 ms stabilization time for 0.1 nm step,

45 ms stabilization time for 0.2 nm step,

55 ms stabilization time for 1 nm step,

60 ms stabilization time for 2 nm step,

65 ms stabilization time for 5 nm step,

70 ms stabilization time for 10 nm step,

OPERATING SYSTEM (OS) 

Windows Vista (32 & 64 bits)

Windows 7 (32 & 64 bits)

Windows 8 (32 & 64 bits) 

SOFTWARE  PHySpec™ included (SDK available)
COMPUTER CONNECTION  USB 2.0 (compatible 1.1)
DIMENSIONS (L x W x H) 

9'' x 6.3'' x 6.7''

(23 x 16 x 17) cm

11.8'' x 9.1'' x 6.7''

(30 x 23 x 17.4) cm

9'' x 6.3'' x 6.7''

(23 x 16 x 17) cm

OPERATING TEMPERATURE  10 to 40°C
STORAGE TEMPERATURE  0 to 50°C
POWER SUPPLY  100 - 240 V, 50 - 60 Hz
OPTIONS & ACCESSORIES
ENHANCED SWIR N/A * up to 2500 nm
FIBEROPTIC INPUT/OUTPUT  An X-Y-Z translation adjustment allows coupling optimization. 
HARMONIC FILTER  Blocks the harmonics coming from the region
400-500 nm
Blocks the harmonics coming from the region
500-10
00 nm and/or 1000-1150 nm
Blocks the harmonics coming from the regions 400-500 and/or 500-850 and/or 850-1150 nm The filter is chosen according to the spectral range
ALIGNMENT KIT (FOR FREE SPACE)  In free-space (input/output) configuration, the alignment kit allows the user to rapidly find the correct alignment
** EXTENDED AND REDUCED SPECTRAL RANGES ALSO AVAILABLE   e.g.: 500-2000 nm, 400-1700 nm, 500-900 nm, 500-650 nm, 650-1000 nm,  1000-1700 nm, 1700-2300 nm, etc.

NOTE: Photon etc. reserves the right to change the design and specification of the product at any time, without notice.

*** Valid if the divergence of the input beam does not exceed 1 mrad.

****  To reach this specification in free space configuration, it is required to couple the filter with Photon Etc.'s background suppressor accessory. Contact us for more details.

The narrow-band light is used in the measurement of the optical properties of materials and in the characterization and calibration of optical instruments. Historical calibration sources used more conventional lamps in the past (e.g., quartz-tungsten halogen lamps) in combination with conventional monochromators. This output from the monochromator suffers from low power and low brightness which prevents this approach from being used in many advanced applications. Combining recently developed sources and spectral filters, e.g.  laser-driven white-light sources (supercontinuum (SC) source) and laser line tunable filters (LLTF) (SC-LLTF), the emitted flux is increased several orders of magnitude over conventional lamp-monochromator systems; the increased flux available opens up many radiometric and photometric applications not possible with conventional systems."

 

Steve Brown - NIST

PUBLICATIONS


WHITE PAPER - WIDELY TUNABLE FILTER
TECHNOLOGY & MEASUREMENT OF CRITICAL SPECIFICATIONS
By Daniel Gagnon and Laura-Isabelle Dion-Bertrand

The out-of-band rejection and the optical density (OD) are two critical specifications of tunable filters. Unfortunately, these properties are often misinterpreted and their definitions tend to differ from one manufacturer to another. End users need to be careful when looking over the specifications of a filter. Also, the measurement of these properties for customers can be laborious. One needs to have sensitive instruments with a high dynamic range, a wide spectral range and a high power source. In this white paper, clear and rigorous definitions of the out-of-band rejection and the OD of widely tunable filters are presented, and the steps and instrumentation needed to accurately measure those specifications are exposed.

DOWNLOAD WHITE PAPER


RELATED PRODUCT

TUNABLE LASER SOURCE

Our turn-key sources unite the flexibility of supercontinuum light sources to the incomparable out-of-band rejection of our optical filters, allowing easy and precise sample excitation or instrument calibration.

VIDEO

Presentation of Photon etc.'s LLTF Contrast

The incomparable efficiency and out-of-band rejection offered by our unique optical filtering technology are ideal for tunable excitation sources in fluorescence and Raman spectroscopy.