可调谐滤波器
Optical Tunable Filter (可调谐超窄带滤波器)
LLTF系列 Tunable Filter是一款非色散的亚纳米带宽可调谐光学滤波器。值得一提的是,因为采用的拥有专利的体光栅技术,这款可调谐光学滤波器具有惊人的60%的非偏振透过率,这是FTS, Fabry-Perot, 声光(AOTF),液晶(LCTF)等方法所无法企及的。波长调谐通过电脑程序控制,省去了重新调整光路带来的不便。此外,由于TNF系列超窄带宽Notch Filter中的filter是由全玻璃材料制成,所以和传统的Notch Filter比较,它具有更高的损伤阈值及工作寿命。
技术指标:
Source Type
|
Spectral range (nm)
|
FWHM(nm)
|
Dye Laser
|
540 - 800
|
<0.3
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Ti:Saphire Laser
|
715 - 1000
|
<0.3
|
800 - 1100
|
<0.4
|
High Power Supercontinuum source (up to 8 W)
|
400 - 1000
|
<0.4
|
1000 - 2300
|
<2
|
Medium power Supercontinuum source (up to 50 mW)
|
400 - 1000
|
<0.4
|
1000 - 2300
|
<2
|
Custom possibilities
|
Available spectral window
|
400 - 2300 nm
|
Available bandwidths (FWHM)
|
From 0.3 nm to 3 nm depending on wavelength
|
Tuning range
|
From 260 nm to 1300 nm
|
Pointing stability
|
< 1 mm lateral displacement (for 1.3 μm spectral range)
|
Peak transmission
|
Up to 60%
|
Wavelength relative resolution
|
0.05 nm (for FWHM = 0.3 nm)
|
Damage threshold
|
> 100 kW/cm2 average power > 5 GW/cm2 peak power @ 1064 nm, 8 ns
|
Aperture diameter
|
≤ 5 mm
|
Dimensions (L x W x H)
|
10’’ x 7.5’’ x 9.25’’ (25.4 cm x 19.05 cm x 23.5 cm)
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Operating temperature
|
10 to 40°C
|
Storage temperature
|
5 to 50°C
|
Software
|
included
|
Computer connection
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USB 2.0 (compatible 1.1)
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Power supply
|
100 - 240 V , 50 - 60 Hz
|