Low stray light, SC light source with excellent wavelength purity, variable filter for laser light source High performance laser line tunable filter
Tokyo Instruments, Inc
About This Product
■High performance laser line tunable filter overview
Photon etc's LLTF CONTRAST™ is a narrow wavelength tunable bandpass filter using a volume transmission grating (Volume Bragg Grating, VBG). With a high damage threshold, it is ideal for wavelength selection of supercontinuum light sources and ASE light removal of Ti:sapphire lasers.
■Features
・Band width variable from 0.15 to 5 nm
・Transmission wavelength range 400nm to 2.3μm
・Peak transmittance approximately 60%
・Low stray light
・Excellent wavelength purity
■Excellent wavelength purity
A diagram showing the out-of-band rejection characteristics of the volume holographic grating at c=632 nm. The 45 nm band is shown, and an out-of-band rejection rate of -60 dB is obtained.
■Fiber adapter (for input/output)
This is an adapter for inputting light from a fiber to LLTF or outputting light from LLTF to a fiber. Fine adjustments can be made using the XYZ axis adjustment mechanism.
■Adjustment kit
A tool for quickly and easily aligning the laser beam to the LLTF without using a fiber. Two irises accurately determine the laser incidence angle and axis. The iris is removable along with the post.
■Harmonic filter
This is a filter for cutting secondary light within LLTF. For example, when outputting light in the 800 to 1,000 nm range from LLTF, a harmonic filter is used to cut the secondary light component in the 400 to 500 nm range.
・For VIS 400-500nm
・For SWIR 500-850nm and/or 850-1,250nm
・For EXT-IV 400~500nm and/or 500~850nm and/or 850~1,150nm
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Product
Low stray light, SC light source with excellent wavelength purity, variable filter for laser light source High performance laser line tunable filter
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Handling Company
Tokyo Instruments, Inc
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Categories
1 Models of Low stray light, SC light source with excellent wavelength purity, variable filter for laser light source High performance laser line tunable filter
| Product Image | Part Number | Price (excluding tax) | Adjustment kit | Bandwidth (FWHM) | Damage threshold | Dimensions (WxHxL) | Enhance SWIR | Fiber output | Harmonic filter | Incident beam diameter | Maximum average input | O.D. | Peak transmittance | Positional stability | Suppression rate for center wavelength | Transmission range (nm) | Tuning speed (ms) |
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CONTRAST VIS |
Available upon quote | Adjustment mechanism for free space | 1.5~2.5nm | < 5GW/cm2 peak power @1,064 nm, 8ns | 160x170x230mm | N/A | Fiber coupler with XYZ adjustment mechanism | Blocks secondary light of 400~500nm | <5mm | HP8 (up to 8W) HP20 (up to 20W, please consult) | > OD6 (@1,064 nm) | 65% | < 0.5mm (@1m distance from exit port) | < -60dB@±40nm < -30dB@±10nm (typical value) | 400~1,000nm | 20ms (0.2nm step or less) 25ms (1nm step) 28ms (2nm step) 35ms (5nm step) 50ms (10nm step) |
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About Company Handling This Product
- Japan