HARPIA
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AUTOCORRELATORS | SPECTROMETERS | OPTICAL PARAMETRIC AMPLIFIERS | HARMONICS GENERATORS | OSCILLATORS | ULTRAFAST LASERS Comprehensive Spectroscopy System The HARPIA comprehensive spectroscopy system performs a variety of sophisticated time-resolved spectroscopy measurements in a compact footprint. It also offers an intuitive user experience and easy day-to-day maintenance meeting the needs of today's scientific applications. Despite its small size, the HARPIA system is easily customizable and can be tailored to specific measurement needs. The system is configured around the HARPIA-TA transient absorption spectrometer and can be expanded using time-correlated single-photon counting and fluorescence upconversion (HARPIA-TF), third beam delivery (HARPIA‑TB) and microscopy modules. Switching between different measurement modes is mostly automated and requires very little user interaction. MEASUREMENT MODES: ᰋ Femtosecond transient absorption and reflection ᰋ Femtosecond transient absorption and reflection microscopy ᰋ Femtosecond multi-pulse transient absorption and reflection ᰋ Femtosecond fluorescence upconversion ᰋ Picosecond-to-microsecond fluorescence using TCSPC ᰋ Intensity-dependent transient absorption and reflection, time-resolved fluorescence ᰋ Time-resolved femtosecond stimulated Raman scattering (FSRS) ᰋ Flash photolysis Adhering to the standards set by the ORPHEUS product line, each module is contained in a single monolithic aluminium body ensuring excellent optical stability and minimal optical path lengths. For a robust and versatile single-supplier solution the HARPIA spectroscopy system can be combined with a PHAROS or a CARBIDE laser together with ORPHEUS series OPAs. HARPIA also supports Ti:Sa lasers with TOPAS series OPAs.

Ultrafast Transient Absorption, TCSPC and Fluorescence Upconversion Spectroscopy Ultrafast Multi-pulse Transient Absorption Spectroscopy AUTOCORRELATORS | SPECTROMETERS | OPTICAL PARAMETRIC AMPLIFIERS | HARMONICS GENERATORS | OSCILLATORS | ULTRAFAST LASERS STANDARD CONFIGURATIONS Ultrafast Multi-pulse Transient Absorption, TCSPC and Fluorescence Upconversion Spectroscopy

AUTOCORRELATORS | SPECTROMETERS | OPTICAL PARAMETRIC AMPLIFIERS | HARMONICS GENERATORS | OSCILLATORS | ULTRAFAST LASERS Ultrafast Transient Absorption Spectrometer APPLICATION FIELDS ᰋ Photochemistry ᰋ Photobiology ᰋ Photophysics The HARPIA-TA ultrafast transient absorption spectrometer features market-leading characteristics such as 0.05 mOD (10-⁴ ΔT/T) sensitivity and the ability to work at high repetition rates up to 1 MHz, when used with a PHAROS or a CARBIDE laser and an ORPHEUS OPA. A high repetition rate allows measuring transient absorption dynamics, while exciting the samples with...

Probe wavelength range, white light supercontinuum generator pumped by 1030 nm Probe wavelength range, white light supercontinuum generator pumped by 515 nm Probe wavelength range, white light supercontinuum generator pumped by 800 nm Spectral range of multichannel detectors Spectral range of single-channel detectors Delay range Delay resolution Laser repetition rate Time resolution <1.4x of pump or probe pulse duration, whichever is longer Physical dimensions, L×W×H Sample chamber area Without external spectrograph. DANGER: VISIBLE AND/OR INVISIBLE LASER RADIATION AVOID EYE OR SKIN...

AUTOCORRELATORS | SPECTROMETERS | OPTICAL PARAMETRIC AMPLIFIERS | HARMONICS GENERATORS | OSCILLATORS | ULTRAFAST LASERS Femtosecond Fluorescence Upconversion and TCSPC Module FEATURES ᰋ Combined femtosecond upconversion and TCSPC measurement in a small footprint ᰋ Straightforward operation and easy day-to-day maintenance ᰋ Works as an add-on to a HARPIA‑TA or as a standalone unit ᰋ Easy switching between fluorescence upconversion and TCSPC modes ᰋ Compatible with PHAROS and CARBIDE series lasers running at 50 – 1000 kHz ᰋ Analog PMT detector option for fluorescence upconversion ᰋ Automated...

TCSPC MODE TCSPC module Emission wavelength range Intrinsic time resolution Time resolution with monochromator < 100 : 1, assuming 5 s averaging per trace ³⁾ UPCONVERSION MODE Wavelength range Wavelength resolution Limited by the bandwidth of the gating pulse, typically around 100 cm-1 Delay range Delay resolution Time resolution < 1.4× of the pump or probe pulse duration, whichever is longer, 420 fs with a PHAROS laser ⁵⁾ 65:1, assuming 0.5 s averaging per point ⁶⁾ Visit www.becker-hickl.de for specifications. Estimated as the FWHM of the upconverted white-light supercontinuum generated in...

ᰋ Can be installed as an add-on to a HARPIA‑TA ᰋ Provides an additional temporal dimension to pump‑probe measurements ᰋ Provides additional insight into complex photodynamic systems ᰋ Full control of the third beam: – Polarization (using a manual or automated Berek polarization compensator) – Intensity (using a manual or an automated continuously variable neutral density filter) – Delay (using an automated 2 ns or 4 ns optical delay line) In a pump-repump-probe (PrPP) configuration, the wavelength of the additional pulse corresponds to an induced absorption resonance and thus is able to...

HARPIA optical layout for multi-pulse experiments OUTLINE DRAWINGS AUTOCORRELATORS | SPECTROMETERS | OPTICAL PARAMETRIC AMPLIFIERS | HARMONICS GENERATORS | OSCILLATORS | ULTRAFAST LASERS Third beam DANGER: VISIBLE AND/OR INVISIBLE LASER RADIATION AVOID EYE OR SKIN EXPOSURE TO DIRECT, REFLECTED OR SCATTERED RADIATION CLASS 4 LASER PRODUCT Outline drawings of HARPIA system with HARPIA-TB and HARPIA-TF modules

AUTOCORRELATORS | SPECTROMETERS | OPTICAL PARAMETRIC AMPLIFIERS | HARMONICS GENERATORS | OSCILLATORS | ULTRAFAST LASERS new Microscopy Module The microscopy module is an add-on to a standard HARPIA‑TA body and enables spatially-resolved pump-probe measurements with a sub-5 μm resolution. Broadband and monochromatic probe beam options are supported. The user can switch between bulk and microscopic pump-probe modes without disturbing the sample by swapping selfcontained bulk and microscopy modules that are mounted on kinematic bases. A 3D motorized stage allows the sample to be positioned and...