Popular frameworks that integrate with Micrometer include Helidon, Micronaut, Quarkus, and Spring. You can use the idioms and configuration model native to your application framework to get started with Micrometer.

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Out-of-the-box instrumentation is available in micrometer-core and in libraries. You do not need to write your own instrumentation for many common components.

The primary techniques available include ‘pump-probe’ Transient Absorption (TA) and Femtosecond Optically Gated (FOG) fluorescence lifetimes.

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Metric MicrometerSet

Micrometer Tracing is a facade over the Brave and OpenTelemetry tracers that gives insight into complex distributed systems at the level of an individual user request. Identify the root cause of issues faster with distributed tracing. Micrometer Tracing is the successor to the Spring Cloud Sleuth project.

The UQ-PULSE laboratories were commissioned in May 2014, facilitating the study of molecular excited state dynamics on very short timescales.

Micrometer provides a facade for the most popular observability systems, allowing you to instrument your JVM-based application code without vendor lock-in. Think SLF4J, but for observability.

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Alternatively, fluorescent samples can be analysed using Femtosecond Optically Gated (FOG) lifetime methods. A tuneable ca. 100 fs ‘pump’ pulse is used to excite the sample, and the resulting emission is mixed with a second ‘gate’ pulse in a non-linear crystal, yielding an upconverted signal and providing the best available time resolution. Using this technique, fluorescence lifetimes with femtosecond time resolution can be obtained. Longer lived samples (> 2 ns) can be analysed using more traditional Time Correlated Single Photon Counting (TCSPC) approaches.

Our system is based on a 1 kHz 4W amplified Ti:Sapphire laser (Spectra Physics - Spitfire ACE) and Optical Parametric Amplifier (Light Conversion – Topas Prime) providing gap free sample photoexcitation from 240-2600nm.Various detection systems are available allowing transient absorption (Ultrafast Systems – HELIOS) and time resolved fluorescence (Ultrafast Systems – HALCYONE) measurements.

Through Micrometer Observation and Micrometer Tracing you can ship your spans via OpenZipkin Brave or OpenTelemetry tracers to different backends (e.g. OpenZipkin or Wavefront).

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As an instrumentation facade, Micrometer lets you instrument your code with a vendor-neutral interface and decide on the observability system as a last step. Instrumenting a library with Micrometer lets it be used in applications that ship data to different backends or even multiple backends at the same time.

You can instrument with the Micrometer Observation API, a single abstraction that can produce metrics, tracing, logs and more. You can instrument once, get multiple benefits, and keep metadata consistent across your observability data.

In TA spectroscopy, a tuneable ca.100 fs ‘pump’ pulse is used to initially populate higher energy excited states. A second ‘probe’ white light pulse is then used to measure the differential absorption of these species. Detection wavelengths currently available span the Visible (420-810 nm) and Near Infra-Red (850-1600 nm) regions. Using a continuum based white light source, we are able to extend the detection time window from ~200 fs (FHWM IRF) to ~1 msec.

Vendor-neutral abstractions for timers, gauges, counters, distribution summaries, and long task timers are provided with a dimensional data model. You can publish to a backend that supports dimensional metrics for efficient access to named metrics where you can drill down across its dimensions.

Micrometer supports publishing metrics to AppOptics, Azure Monitor, Netflix Atlas, CloudWatch, Datadog, Dynatrace, Elastic, Ganglia, Graphite, Humio, Influx/Telegraf, JMX, KairosDB, New Relic, OpenTelemetry Protocol (OTLP), Prometheus, SignalFx, Google Stackdriver, StatsD, and Wavefront.

Ultrafast spectroscopy is used to measure the kinetics for a variety of important photophysical processes in chemical and biological research, including electronic structure, photoisomerizations, energy and/or electron transfer, charge transport, optical non-linear effects, and many other processes.

Micrometer can directly publish to most backends for storing your observability data. You can use what you have or switch. Micrometer makes it easy. See below and the documentation for supported backends.