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光谱系统

HARPIA-TA

瞬态吸收光谱系统

紧凑瞬态吸收光谱仪，用于紫外到中红外泵浦–探测；模块可做荧光、多脉冲与闪光光解测量。

技术特点

  • 测量范围从紫外到中红外
  • 可在高重复频率下工作
  • TA、荧光与 FSRS 模块
  • 8 ns 延迟，步进 8.3 fs（紫外–可见）
  • 可与掺镱或钛宝石泵浦搭配

适用应用

超快光谱
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技术参数

HARPIA-TA – Transient absorption & pump-probe

Configuration紫外–可见UV-VIS-NIR中红外
探测光谱范围350 – 1100 nm 1)350 – 1600 nm 1)2000 – 13 000 nm 2)
泵浦范围240 – 2200 nm 2)240 – 2200 nm 2)450 – 2200 nm 3)
延迟范围（分辨率）8 ns (8.3 fs)8 ns (8.3 fs)4 ns (4.2 fs)
Temporal resolution≤ laser pulse duration≤ laser pulse duration≤ laser pulse duration
激光重复频率1 – 100 kHz1 – 100 kHz1 – 100 kHz
Maximum data acquisition rate3850 Hz3850 Hz100 kHz
测量模式反射与透射反射与透射反射与透射
  1. Pump–probe measurements using Yb-based laser systems may exhibit blind spots at 515 nm and 1030 nm, corresponding to the second harmonic and the fundamental wavelength of the laser, where strong pump scattering can interfere with accurate detection.
  2. The range is determined by the OPA’s output spectrum.
  3. The wavelength range is configurable to 240 – 700 nm.

HARPIA-TA-FP – Flash photolysis – nanosecond transient absorption

ModuleHARPIA-TA-FPHARPIA-TA-FPHARPIA-TA-FP-UVHARPIA-TA-FP-UV
HARPIA-TA configuration紫外–可见UV-VIS-NIR紫外–可见UV-VIS-NIR
Probe spectral range 1)450 – 1100 nm450 – 1600 nm350 – 1100 nm350 – 1600 nm
泵浦范围240 – 2200 nm 2)240 – 2200 nm 2)240 – 2200 nm 2)240 – 2200 nm 2)
Delay rangeup to 485 μsup to 485 μsup to 485 μsup to 485 μs
Temporal resolution2 ns2 ns1 ns1 ns
Probe laser repetition rate1850 Hz1850 Hz1850 Hz1850 Hz
Maximum data acquisition rate3850 Hz3850 Hz3850 Hz3850 Hz
Mode反射与透射反射与透射反射与透射反射与透射
  1. Pump–probe measurements using nanosecond laser systems may exhibit blind spots at 1064 nm, corresponding to the fundamental wavelength of the laser.
  2. The range is determined by the OPA’s output spectrum.

HARPIA-TF – Kerr gate, fluorescence upconversion & TCSPC

Measurement techniqueKerr gateFluorescence upconversionTCSPC
Spectral range380 – 1000 nm330 – 820 nm 1) 2)220 – 820 nm 3)
泵浦范围240 – 2200 nm 4)240 – 2200 nm 4)240 – 2200 nm 4)
Temporal resolution≤ 1 ps≤ 1.4 x laser pulse duration< 180 ps or < 50 ps
延迟范围（分辨率）8 ns (8.3 fs)8 ns (8.3 fs)5 μs 5)
Compatible withTCSPCTCSPCKerr gate or fluorescence upconversion
DetectorCCDPMTPMT
测量模式TransmissionTransmission反射与透射
  1. The fluorescence detection range is extendable up to 1600 nm.
  2. Fluorescence detection may exhibit blind spots at 343 nm, 515 nm, and 1030 nm due to harmonic overlap.
  3. The spectral range is extendable with an additional NIR detector (measurement range 1000 – 1700 nm).
  4. The range is determined by the OPA’s output spectrum.
  5. Using FIFO-based acquisition, the temporal window can be extended up to ~1 s for monitoring longer-timescale processes.

HARPIA-TB – FSRS & multi-pulse time-resolved transient absorption

Measurement techniquePump for multi-pulse experimentsFSRS 1)
探测光谱范围depends on the HARPIA-TA configuration350 – 1100 nm 2)
Raman spectral rangen/a700 – 2000 cm⁻¹
Acceptable wavelength range450 – 2200 nm 3)450 – 2200 nm 3)
延迟范围（分辨率）4 ns (4.2 fs)4 ns (4.2 fs)
测量模式TransmissionTransmission
  1. The results were obtained using a specific system configuration: a PHAROS femtosecond laser, an ORPHEUS-HE OPA, and an SHBC combined with an ORPHEUS-PS OPA. Measurements were performed at a 10 kHz repetition rate with a 540 nm actinic pump and a 450 nm Raman pump. β-carotene was used as the sample.
  2. The system may exhibit blind spots at 515 nm and 1030 nm, corresponding to the second harmonic and fundamental wavelength of the laser, where strong pump scattering can interfere with accurate detection.
  3. The wavelength range is configurable to 240 – 700 nm.

外形尺寸

ModelPhysical dimensions (L × W × H) 1)
HARPIA-TA730 × 420 × 183 mm
HARPIA-TA sample chamber area (L × W)205 × 216 mm
HARPIA-TF571 × 275 × 183 mm
HARPIA-TB670 × 252 × 183 mm
  1. Without an external spectrograph.