Nanoscribe Quantum X align Nanoscribe Quantum X align

Quantum X align

Quantum X align is the best-in-class 3D printer equipped with Aligned 2-Photon Lithography A2PL® for nanoprecision alignment on optical fibers and photonics chips

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Aligned 2-Photon Lithography (A2PL®)
drives innovation in photonics packaging

Printing on fibers + chips

Optimized hardware and workflow to print on standard or customized fiber arrays and photonic chips

Nanoprecision 3D alignment

Substrate topography measurements and 3D alignment on chips and on fibers with nanoprecision

Optical grade 3D-printing

Sophisticated freeform microoptics with highest shape accuracy and surface roughness down to ≤ 10 nm

Highest resolution
3D printer with
A2PL® technology for nanoprecise alignment

The Aligned 2-Photon Lithography (A2PL®) system Quantum X align enhances Nanoscribe’s field-proven 3D Microfabrication technology based on Two-Photon Polymerization (2PP) by adding high-precision alignment capabilities for highly accurate placement of printed structures. With A2PL freeform microoptics can be printed precisely aligned to the optical axes of fibers or photonic chips with submicron accuracy using this highest resolution 3D printer with nanoprecision aligned 3D printing capabilities. Produce efficient optical interconnects for photonic integration and photonics packaging or miniaturized imaging optics, e.g. for minimally invasive endoscopy.

Front view of our Quantum X align system
Align, print, done

Packaging of integrated photonic circuits (PIC) or miniaturized medical devices requires tedious placement and active alignment of the various microoptical elements to each other. Quantum X align simplifies this process: With A2PL optical interfaces on photonic chips or fiber cores and their spatial orientation are automatically detected, and freeform microoptics or diffractive elements are printed directly in place, taking tilt into account. Thus, the complexity of the process chain is reduced and assembly tolerances are relaxed while enabling even more compact devices. The often costly active alignment is no longer necessary.

Align to optical fibers and photonic chips

The automatic 3D fiber core detection system and automatic tilt correction guarantee precise alignment and lowest coupling losses when printing onto single cleaved fibers or v-groove fiber arrays.
Quantum X align also features a confocal imaging module for 3D mapping of substrate topographies and fully automatic 3D alignment to predefined markers or waveguides. This makes Quantum X align the perfect 3D-aligned nanofabrication tool for 3D printing microoptical elements directly onto surfaces or facets of photonic chips and thus for photonics packaging processes in industrial manufacturing.

Align to your ideas

The Aligned 2-Photon Lithography technology with nanoprecision 3D alignment, coupled with a powerful and user-friendly workflow, also opens up new opportunities for 3D Microfabrication beyond microoptics. From microfluidics to complex sensor systems or MEMS: Quantum X align is the perfect two-photon lithography tool for high-precision direct laser writing, automatically positioned with highest precision onto complex 3D substrates, even on tilted or angled structures.

Technical features in brief
  • High-performance 3D Microfabrication by Aligned 2-Photon Lithography (A2PL)
  • 3D printing on fibers: Precisely aligned printing on the facets of optical fibers based on fiber core detection
  • 3D printing on chips: Precisely aligned printing on the surface or facet of chips based on 3D substrate topography mapping
  • 3D alignment: Automatic detection and compensation of substrate tilt in 3 rotation axes
  • Smart slicing for high-speed microfabrication
Printing processes and workflow
  • High-precision 3D printing based on Two-Photon Polymerization (2PP)
  • Easy and robust setup with Dip-in Laser Lithography (DiLL)
  • Feature size control down to 100 nanometers
  • Aligned 2-Photon Lithography (A2PL) at predefined positions

Free Space Microoptical Coupling

Free Space Microoptical Coupling (FSMOC) offers a highly robust and efficient light coupling solution for photonics packaging and integration. Freeform microoptics fabricated directly on the optical interface of chips or fibers enable tailored beam shaping and mode field adjustments. This leads to relaxed alignment tolerances between optical elements and eliminates the need for active alignment, e.g. for fabricating optical interconnects. FSMOC is flexible in use and can be easily tailored to meet application specific requirements. Even previous mode field adjustments at the chip level can be transferred to the new 3D printing approach.

  • Cost efficient photonics packaging strategy
  • Relaxed alignment tolerances for passive alignment
  • Achievable coupling losses down to ≤ 1 dB
  • Easy and quick adaption to new requirements and applications

Facts and figures on Quantum X align

  • Key Features
  • Designed for
  • Specifications
  • Downloads
  • A2PL based 3D Microfabrication
  • Automatic alignment system with nanoprecision in all spatial directions
  • High-precision fiber core detection based on fiber illumination unit
  • Confocal module for 3D topography detection and precise alignment on chip and chip facets
  • Automatic substrate tilt recognition and print adjustment in 3 rotation axes
  • Smart slicing for optimized resolution, precision and speed
  • Substrate holders for customized or standard fiber arrays and photonic chips
  • Automated self-calibration routines for most accurate laser power control and positioning
  • Touchscreen and remote control software ensure high usability

Rapid Prototyping and high-performance small series production of precisely aligned freeform microoptics

  • Lensed fiber arrays for optical interconnects
  • Imaging and beam shaping optics on single fibers or fiber arrays
  • Optical interconnects on integrated photonic chips
  • Beam shaping or light collection on integrated photonic chips

Designed for pioneers and innovators in research and industrial manufacturing in

  • Integrated photonics
  • Photonics packaging
  • Medical instrumentation
  • Optical sensing
  • Quantum technology
Benchmark scores
3D alignment precision 1 down to 100 nm  (xy) / 500 nm (z)
Surface roughness Ra down to ≤ 10 nm
Shape accuracy Sa ≤ 200 nm (ISO 25178)
Feature size control 2 down to 100 nm
Typical processing time 10 min. for 8x lensed fiber array
Achievable coupling losses 3 ≤ 1 dB
General system properties
Printing technology

Aligned 2-Photon Lithography (A2PL®)
3D printing based on Two-Photon Polymerization (2PP)
Dip-in Laser Lithography


Fiber arrays (v-groove)
Single cleaved fibers (single-/multimode)
Photonic chips (unmounted/TO can)
Wafers from 1” to 6” (25.4 mm to 150 mm)
Glass, silicon, other transparent and opaque materials
Further form factors on request


Nanoscribe IP Photoresins (polymers printing)
Open for third-party and custom materials

Maximum print area 50 x 50 mm²

Given values may vary depending on the photoresin and structure geometry.
1 Detection accuracy depends on selected method
2 100 nm feature size control in x/y direction
3 Best case for typical applications, depending on design, substrate quality and measurement method

Joost van Kerkhof, Chief Operations Officer of PHIX Photonics Assembly

Portrait of Joost van Kerkhof, Chief Operations Officer of PHIX Photonics Assembly
We are confident in Nanoscribe’s new, aligned 3D printing technology for producing lensed fiber arrays and lensed chips with virtually limitless optical designs.

Set the scene with nanoPrintX
Compose and align your prints smarter

nanoPrintX is much more than a 3D printer slicer software. It is a game-changing tool to create sophisticated print projects for aligned 3D printing. The underlying scene graph concept, a tree-like data structure that provides a hierarchical organization of all print-relevant objects and operations, enables an agile definition of what, where, in which spatial orientation and how to print. The intuitive software architecture, combined with a central rendering canvas, provides instant visual feedback on the position and spatial alignment of all elements relative to each other and to predefined positions or substrates.

Each node of the nanoPrintX scene graph is a print-relevant object or operation and includes a set of adjustable properties. You can import several design files and organize them into group or array nodes, or merge multiple files into one print object. To make the most out of the Aligned 2-Photon Lithography (A2PL) technology, you can define individual alignment markers as well as substrate features such as chip edges and fiber facets. Using Quantum X align's confocal unit or fiber illumination unit, these specific substrate markers can be identified and matched to the digital model defined with nanoPrintX.

Compose your print project with nanoPrintX: Define the print scenario by creating a virtual model of your specific substrate, such as optical fibers or photonic chips with individual alignment markers. Import your 3D print designs as STL or OBJ files and place them into your scene. Assign pre-developed print parameters to individual designs as needed, and they work right out of the box. Finally, simply upload your print project to Quantum X align and enjoy the results.

Start your print project via the touchscreen: The intuitive touchscreen user interface of Quantum X align easily guides you to successful printing. Register the starting positions on each substrate, double check using the high-resolution live camera view and start your print project. The system will then automatically align your prints with respect to your markers with submicron accuracy.

Stay connected with nanoConnectX: Start and monitor your print project from the office with the remote access software nanoConnectX. It brings all the control functions and display capabilities of Quantum X align’s front panel touchscreen to any computer connected online. The Quantum X align system is hereby well equipped for production environments and multi-user scenarios.

Software facts

  • Scene printing
  • On-fiber printing
  • nanoConnectX

nanoPrintX is a print project development software based on scene graphs. With this modern, tree-like data structure, you can easily generate logical relationships between elements of the print and assign individual properties or print parameters. This allows you to exactly define how the printed structures are aligned to the substrate and to each other.

Load multiple CAD designs into one scene and assign different print parameters to each part design. This way, you can fine-tune your print and obtain optimized quality and speed for each section. Many actions can be dynamically configured using drag & drop. For example, you can easily change the order of alignment and printing operations.

nanoPrint X scene printing

With nanoPrintX you can design your individual Lensed Fiber Arrays (LFAs) in just a few steps.

Select the fiber node in the scene graph and place your individual lens designs as .STL or .OBJ files on the fiber. With just a few steps you can easily generate multiple copies of the same print or customize each fiber with an individual design.

on-fiber printing nanoPrintX software overview

Control and monitor the system with nanoConnectX, the remote access software for the Quantum X platform. It guides you to a successful print in just a few steps.

Select your print project, register the starting position and start printing. The system then automatically aligns and prints the structures in exactly the right position and spatial orientation.

Check out how
3D-aligned nanofabrication comes about...

How does aligned printing on the facet of optical fibers work?

With the fiber illumination unit, the fiber core can be easily located using the Quantum X align touchscreen. First, the print field on the fiber array is defined by manual coarse alignment with a double-tap on the touchscreen. Then, Quantum X align automatically detects the position of the fibers with submicron accuracy and compensates for smallest substrate tilts during the print in all spatial directions.

For this, the autofocus routine first detects the surface of the optical fiber. Next, the system identifies the illuminated fiber core and marks the center of the core as the origin of a virtual coordinate system to which the print object is aligned. The virtual z-axis and its orientation in space is determined by moving the substrate downwards and identifying the position of the fiber core on multiple positions along this vertical movement of the stage. As a result, the optical axis orientation is detected and set as the virtual z-axis for a tilt compensated printing of microoptics with submicron precision.

aligned printing on the facet of optical fibers

What role does hardware play in the fiber printing workflow?

To support the fiber printing workflow, Quantum X align is equipped with a red LED fiber illumination unit. Up to 32 individual fibers with standard PC or APC connectors can be plugged into this unit. The specially designed fiber substrate holder secures single fibers or fiber arrays and can load up to four fiber arrays at a time. Once inserted into the printer, the illuminated fiber cores can be easily identified using the live microscope view on the 18.5-inch touchscreen of Quantum X align. A double tab on the screen allows the stage to be moved to any position within the 50 x 50 mm² print area. A crosshair can be activated to facilitate the rough alignment on the screen, and intuitive gestures let you zoom in and out on the screen.

How can complex objects with optical quality surfaces be printed at the highest speed?

The new workflow can load multiple .stl or .obj files and merge them to one single print object. This enables the user to set individual print parameters, such as slicing, hatching, laser power or scan speed, for each individual part of the print object. As a result, support structures can be printed faster with coarse parameters, whereas optical parts such as the surface of a lens can be printed with finer settings that result in a surface roughness (Ra) of 10 nm and even less. Of course, predefined print parameters are available out of the box but can also be customized to fit the design and specific requirements. The individual parts are then merged to one print project and uploaded to Quantum X align.

Adjusting print parameters to the functional requirements of the print object saves valuable process time and enables Quantum X align to process an 8x V-groove fiber array in less than 20 minutes.

groove fiber array

Why is a confocal unit used for automatic topography alignment?

Quantum X align features a high precision confocal imaging module for 3D mapping of substrate topographies. This module is integrated into the beam path of the near-infrared printing laser. The laser beam is scanned over the sample surface and the back-scattered light is confocally detected by the system. High resolution 3D topographies are recorded by moving the stage vertically and repeating surface scans multiple times along the z-axis. A spatial filter pinhole in front of the detector ensures that only light from the focal plane is detected, resulting in a lateral detection accuracy down to 100 nm. Thus, the confocal module measures real 3D topographies and is more precise than image-based measurements using the system camera.

SLR1 automatic topography alignment

How are optical components aligned and printed onto a photonic chip?

The 3D alignment of the print object is based on the high-resolution 3D topography mappings by the confocal unit. For the precise alignment of optical components on a photonic chip, smart software algorithms automatically identify predefined markers and topography features. Thus, the exact position and orientation of the waveguides on the chip can be determined. A virtual coordinate system is then set to the exit of the waveguide, perfectly aligned with its optical axis and orientation. The desired optical components are printed with respect to this coordinate system, ensuring best optical performance and minimizing coupling losses. This enables efficient light coupling by Free Space Microoptical Coupling (FSMOC).

how optical components are aligned and printed onto a photonic chip

How does Quantum X align overcome the challenges of printing on the facet of photonic chips?

Printing onto a chip’s facet from top, i.e. perpendicular to the substrate surface, is a challenging task and requires not only a precise positioning system but also smart solutions to overcome the “shadowing effect”: When printing onto a facet, a substantial part of the intensity in the focal point of the printing laser is lost, because the light is partly blocked by the edge of the substrate. Close to the substrate wall the shadowing effect is more prominent and requires higher exposure doses. Quantum X align automatically compensates for this effect using a patent-protected process and dynamically adjusts the exposure conditions during printing. This results in microoptics and other print objects written onto the facet of a substrate with submicron shape accuracy.

how Quantum X align overcomes the challenges of printing on the facet of photonic chips

What range of different substrates can be used?

Nanoscribe’s substrate holders guarantee a precise fixation and enable to print on the facet of single fibers, fiber arrays and photonic chips. Furthermore, standard substrates such as microscope slides and wafer formats from 1” to 6” can be easily processed. The advanced interface finder of Quantum X align includes two complementary modes for reflection and fluorescence detection of the substrate surface. In combination with the Dip-in Laser Lithography (DiLL) configuration, a wide range of reflective (e.g. silicon wafers), transparent and opaque substrates (e.g. glass and polymer substrates) can be used.

lensed fiber array from PHIX

What are the unique advantages of the proprietary Dip-in Laser Lithography (DiLL)?

Dip-in Laser Lithography (DiLL) is the standard printing configuration of Quantum X align. Nanoscribe invented this technology for 3D Microfabrication with the highest precision and the lowest aberration on the market. In this configuration, the objective lens is immersed in the photoresin, which also serves as an optical immersion medium. The refractive index matching between the focusing optics and the print material guarantees ideal, aberration-free focusing with the highest resolution in 2PP-based 3D printing. Furthermore, the writing laser is not focused through the substrate (e.g. oil immersion configuration), but writes the print object directly onto the substrate. Consequently, the working distance of the focusing optics does not limit the height of the 3D-printed object, which is especially beneficial for printing macroscale objects.

Why is it so easy to integrate Quantum X align into production environments and multi-user facilities?

The advanced autofocus system reliably finds the interface of any substrate with maximum accuracy and repeatable print results. Three live-view cameras facilitate process control and monitoring. An automatic dispenser applies the correct amount of photoresin onto the substrate, reducing workload and enabling remote operation. To simplify switching between hardware configurations, the Quantum X align automatically detects the printheads and substrate holders. Quantum X align software controls and monitors print jobs in real time and supports intuitive operation through an interactive touchscreen control panel, or remotely from the office via the remote access software nanoConnectX. This remote access also simplifies the work of entire user groups, e.g. members of a research group or a department, with a single or multiple systems, each of them accessing the Quantum X align from their own computer.

Man working remotely with Quantum X align

What site conditions do our devices need for optimal operation?

Quantum X align is the ideal tool for high-speed 3D Microfabrication of objects with submicron feature sizes, surface roughness profiles of 5 nm and less and nanoscale precision. This highest precision in 3D printing can only be exploited to the maximum by taking some precautions with regard to the system itself and the installation site. Quantum X align should have its fixed place in a room with stable room temperature and humidity. The printer comes with a heavy granite base to reduce the influence of vibrations and temperature fluctuations of the environment. Nevertheless, it is important to install the high-precision printer in a location that minimizes external vibrations. For the handling of the UV-sensitive photoresin outside the printer, we recommend to equip the room with yellow light and to meet basic requirements of a chemistry lab to handle organic solvents for the print development process properly.

If you would like to get an idea of how the Quantum X align work environment can look like, contact us and visit our Microfabrication Experience Center here at Nanoscribe or book your online tour.

Quantum X align
Connect to the photonic world

Aligned 3D printing.

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Nanoscribe's Quantum X align system

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