We support Coherent ultrafast oscillators, amplifiers, pump lasers and parametric modules: Chameleon, Mira, Vitara, Legend, Libra, Astrella, RegA, Monaco, Verdi and OPerA. Call us when a system is out of warranty, out of support, or the factory route does not fit your timeline. You get written findings before any repair, and nothing is repaired without your approval.
Coherent has supplied research laboratories since the 1970s, and a university optics building can hold equipment from several technology generations at once: legacy ion and dye platforms, a Verdi-pumped Mira still central to a group’s work, and a current Chameleon or Astrella under contract.
Those generations sit in different places commercially. Current products are supported by the manufacturer. Legacy ion and dye platforms have had specialist independent support for a long time. The systems in between, and the ones that have recently come off contract, are where laboratories start looking for an engineering answer rather than a catalog answer.
That is the work on this page. We evaluate the system, localize the fault through the chain, report in writing, and repair what you approve.
We provide independent service and repair support for the families below. What a specific system needs is settled by its configuration, its parts access and the measurements the project requires, and we confirm that with you before anything ships.
Send us your configuration and we will confirm the scope. On these platforms the mirror set, the controller revision, the internal pump and the presence or absence of a conversion or OPO module matter more than the family name, and we settle both at the enquiry stage rather than after you have paid to crate the system.
On a Chameleon the pump is inside the box; on a Mira it is a separate Verdi or Evolution. Either way, lost pump power or degraded pump mode quality is the most common cause of a system that will not mode-lock or has lost amplifier gain.
Drift after a move, thermal cycling or a previous intervention. On the sealed platforms this is factory territory, and whether it can be recovered depends on the specific model and what access the design allows. We tell you before opening anything.
Chirped mirrors, prism pairs and compensating optics, which set the shortest pulse the system can support and degrade without any front-panel indication.
In Legend, Libra, Astrella and RegA, switch-in and switch-out timing decides whether a pulse is amplified at all. A timing fault collapses pulse energy while the repetition rate reads normal.
Grating damage and separation drift in the amplified platforms, producing correct average power with an unusable pulse duration.
Surface damage from a previous overdrive event, and deposits accumulated over years. Progressive, and easy to attribute elsewhere.
Chillers, TEC loops, flow rates and temperature sensors. Presents as pointing drift, mode degradation or a silent power limit rather than as an alarm.
Diode drivers, pump current controllers, supplies with aging electrolytics, monitor photodiode and feedback paths, interlock chains, motorized tuning stages and the software path.
A different technology with a different failure economics. Tube work is specialist and long-established, and we will tell you when a job belongs with an ion tube specialist rather than with us.
Send the model, a photograph of the product label and the symptoms. We review it and respond with the next step.
Every job runs on a written scope. The order below exists to eliminate a branch cheaply before the next, more invasive step is justified.
Every engagement names its measurements before it starts. PhaseX defines and provides the measurement capability the project requires. Depending on the system and the question being answered, that is owned, rented or qualified third-party measurement resources arranged as required. The evaluation proposal states which measurements will be made, by what method, and where each one comes from, together with the acceptance criteria the work is judged against.
| Measurement | What it establishes |
|---|---|
| Drive current against command | Whether a commanded setpoint reaches the driver and produces real current, which separates a control-path fault from an optical one |
| Supply, rail and protection behavior | Rail integrity under load, sequencing, and protection states that cap output without reporting anything |
| Timing, trigger and switching | Trigger and synchronization paths, driver and Pockels cell switching, and pulse-train structure |
| Optical power and pulse energy by wavelength | Real output at each wavelength on a defined and terminated path, with the detector, wavelength response, attenuation and measurement point stated |
| Optical pulse presence and repetition rate | Whether an optical pulse train exists at all, and its relationship to the trigger |
| Spectral condition | Emission wavelength and bandwidth, and confirmation that the light being measured is the light assumed |
| Beam and mode condition | Spatial condition of the output, and evidence of optic, fiber or alignment damage in the delivery path |
| Thermal behavior under load | Cooling loops, TEC and oven control, and thermal derating that presents as a silent power limit |
| Pulse duration and beam quality | Specified where the project requires it, and performed with the measurement resource identified in the proposal |
In-house instrumentation currently includes a RIGOL MHO984 oscilloscope and a Joulescope JS320 for electrical, current, timing and pulse-train work. Optical metrology is specified per project and provided through owned, rented or qualified third-party measurement resources arranged as required and named in the proposal. We do not publish an equipment inventory in place of a measurement plan, and we do not offer manufacturer-equivalent calibration or certification to original published specifications where the original acceptance data and the corresponding standards are unavailable.
Coherent does not publish a single consolidated end-of-support list, so in practice a laboratory discovers a platform's status by asking for a quotation and being told no. Catalog absence is the usual indicator: the RegA, the original Mira 900 series, the 599 and 699 and 899 dye platforms and much of the Innova line no longer appear as current products while remaining in service in laboratories.
Our position on those systems is the same as on any orphaned instrument. The faults concentrate in drivers, supplies, thermal control, feedback paths, mechanics and control electronics, all of which respond to component-level engineering. What ends a repair is a failed custom assembly with no available substitute, not a catalog status.
The general treatment is on the obsolete scientific laser support page, including substitution, retrofit and the honest limits.
We do not hold a Coherent spare-parts channel and we do not supply original factory modules. Repair on these platforms is component-level engineering with functionally equivalent substitution where an original part no longer exists, and every substitution is documented as a deviation from original design.
A system that cannot be brought to its normal operating state on the bench cannot be diagnosed. For bench evaluation we normally need:
On discontinued platforms the customer's own paperwork is frequently the only surviving record of the configuration. Send it even when it looks irrelevant.
We receive systems from outside the United States, including from Canadian universities and research institutes. We provide the commercial documentation a repair shipment normally requires and coordinate with your shipping office. Customs classification, duties, temporary import treatment and clearance timing remain the sender's responsibility, and we do not give customs guarantees. Insurance is the sender's decision and should reflect replacement value. We document the as-received condition on arrival, which is the evidence you would need if transit damage has occurred.
We are direct about the work we take on, so we are equally direct about the two boundaries.
If your system is still inside its manufacturer warranty, use the manufacturer, or get written authorization from the seller first. Our work is out-of-warranty and legacy equipment, which is where the support gap sits in any case.
Class 4 work is planned and executed under a project-specific laser safety plan. The required engineering controls, personal protective equipment, beam management and facility conditions are defined in writing before any energized optical work begins, and the infrastructure that plan calls for is provided within the project scope. Where a laboratory's own controls are involved, final hazard analysis and approval stay with the institution's LSO or EHS function.
PhaseX Laser Services is an independent third-party service provider, not affiliated with or authorized by any manufacturer named on this page unless expressly stated in writing. Brand and model names identify equipment only.
Manufacturer material used for platform and family identification on this page. Where our reading of a document differs from the configuration in front of us, the physical equipment governs.
On Coherent ultrafast systems the pump pairing and the controller revision decide the diagnostic approach. Send label photographs of every box in the set, your normal operating parameters, and what the system does now.
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