Fluorolog-QM

Modular Research Fluorometer

The HORIBA Fluorolog‑QM™ series is a fourth‑generation, modular research‑grade spectrofluorometer combining all‑reflective optics with a choice of light sources, detectors, and sample accessories for unparalleled sensitivity and versatility. Its modular design allows users to add or upgrade components—such as pulsed lasers, LEDs, and NIR detectors—at any time to meet evolving experimental needs, supported by new steady‑state and lifetime software for streamlined workflows.

Fluorolog-QM

Modular Research Fluorometer

Why Choose Fluorolog-QM

All reflective optics for perfect performance at all wavelengths
Highest guaranteed sensitivity (over double Fluorolog‑3)
Excellent stray light rejection via large, coma‑corrected monochromators
Integrated TCSPC lifetime enhancements up to 100 MHz
Simultaneous connection of up to 4 light sources & 6 detectors
Extended excitation from 180 nm (Deep UV) to 5,500 nm (NIR)

Key Advantages of Fluorolog-QM

Unmatched Sensitivity

>35,000:1 SNR (FSD)

Detects trace fluorophores

; Rapid Full‑Spectrum Acquisition

250–1,100 nm in <1 s

Enables high‑throughput studies

Flexible Lifetime Measurements

5 ps to seconds

Covers ultrafast to long‑term decay analyses

Ultimate Modularity

Up to 4 light sources & 6 detectors

Adapts to diverse research protocols

Applications of Fluorolog-QM

Time‑Resolved Electroluminescence

Characterize nanosecond‑to‑second dynamics in optoelectronic materials

PLQY in NIR

Integrating sphere measurements for quantum yield studies

Quantum Dot Spectroscopy

Photoluminescence profiling for nanomaterial development

Frequency up-conversion for Rare Earth Elements

Real‑time measurement of up‑converted luminescence in lanthanide‑doped crystals

Technical Specifications of Fluorolog-QM

The following specifications are for the standard Fluorolog-QM-75-22 system.
Options and upgrades may be available upon request.

Signal-to-Noise Ratio	(>35,000:1 FSD)
Data Acquisition Rate	1,000,000 points/sec. to 1 point/1000 sec.
Inputs	4 photon counting (TTL); 4 analog (+/- 10 volts); 1 analog reference channel (+/- 10 volts); 2 TTL
Outputs	2 analog (+/- 10 volts); 2 TTL
Emission Range with standard PMT	185 nm to 900 nm (optional to 5,500 nm)
Light Source	High efficiency “ECO” friendly continuous 75 W Xenon arc lamp (Optional 450 W Xenon)
Excitation and Emission Monochromators	700 mm, triple grating, coma-aberration corrected, asymmetrical, excitation or emission optimized, Czerny-Turner design with computer controlled slits at entrance, intermediate plane and exit.
Slits	Computer controlled, continuously adjustable
Excitation Grating	1200 line/mm 300 nm blaze, (Up to two optional gratings can be ordered)
Emission Grating	1200 line/mm 400 nm blaze, (Up to two optional gratings can be ordered)
Wavelength Accuracy	+/- 0.3 nm
Minimum Step Size	0.01 nm (grating dependent)
Standard Detection	Multimode, -20 degrees Celsius cooled, 1600 Volt PMT housing; Multimode: Photon Counting, 3 analog (fast, medium, slow response), direct and Single-Shot Transient Digitizer (SSTD) mode, and Time-Correlated Single Photon Counting (TCSPC), R928P PMT standard (other PMT's available)
R928P PMT Dark Count:	10 counts per second or less
R928P PMT Maximum Linear Count Rate:	10,000,000 counts per second
System Control	Computer interface with FelixFL spectroscopy software
Lifetime Range	5 ps to seconds with appropriate time-resolved accessories

HORIBA Scientific has a policy of continuous product development, and reserves the right to amend part numbers,
descriptions and specifications without prior notice.