• Product nameMode Locked Er Fiber Laser Kit
  • ModelLAK-Er-ML01
  • PriceUS$ 4,600 (tax-excluded)
  • Lead time1 week – 2 months

Our 1.5 μm band ultra-short pulse fiber laser is available for purchase for under ¥500,000 (tax included).
All necessary optical components are included, eliminating the hassle of selecting parts. Additionally, building it yourself allows you to easily accumulate know-how in laser source development.
Furthermore, the kit format provides high flexibility, enabling you to reconfigure the setup as needed when your research advances.

Ultrafast Fiber Laser: US$ 4,600

You can purchase a 1.5 μm band ultrafast fiber laser for less than US$ 5,000 (tax-included). Because all electric parts necessary for a 1.5 μm band ultrafast fiber laser are included in this kit, saving the bothersome work to select suitable optical parts, You will be able to easily accumulate laser light source developing knowhow while you mount the Kit by yourself.
Furthermore, thanks to higher degree of freedom d due to kit, you can easily rearrange the structure of 1.5 μm band ultrafast fiber laser as the research advances.
::What is an “ultrafast laser” ?
::What is a “fiber laser” ?

Feature

Optical parts for 1.5 μm band available in the market is a few, making harder to prepare all component optical parts compared with those for 1.0 μm band.

Comparison between usual products and Kokyo’s

Mode Locked Er Fiber Laser Kit Conventional Products (Typ)
Pulse width several    100 fs to several ps(adjustable)
Center wavelength 1.5 μm 1.5 μm
Average power several mW to 10 mW >50 mW
Repetition rate several 10 MHz to 80 MHz(adjustable) 50 MHz
Self-making Possible Impossible
Price Presented (US$ 4,600) Not presented (up to US$ 50,000)

Mounting and Specification

Mounting

This kit includes:

・a set of optical parts
・a set of optical parts
・a semiconductor
This kit works on NPR (Nonlinear Polarization Rotation) as a principle of mode locking.
::What is “NPR (Nonlinear Polarization Rotation)” ?

Structure of Mode Locked Er Fiber Laser Kit

モード同期Erファイバーレーザーキット写真

Structure example of Mode Locked Er Fiber Laser Kit

Example of Specification

Center wavelength :1.5 μm
Output : several mW to several 10 mW
Pulse width :several 100 fs to several ps
Repetition frequency:45 MHz(Typ.)
Polarization: Vertical polarization (vertical direction)
Output method: Spatial output
*Specification is subject to change according to alignment of built-up optical parts or fiber lengths.

An example of auto-correlation waveform

One example of optical spectrum

One example of application

・Optical communication
・Light measurement
・Air pollution measurement
・Security
・Nonlinear frequency conversion
・Lidar, Range finder
・3D scanning

List of papers

We would like to introduce a paper that utilizes a mode-locked fiber laser with a configuration similar to this kit. This product is employed in various scenarios, such as innovative nanomaterial synthesis process experiments, as it irradiates femtosecond pulse lasers onto synthetic solutions.

  1. “Au Quantum Clusters and Plasmonic Quantum Nanoparticles Synthesized under Femtosecond-Pulse Laser Irradiation in Aqueous Solution and in ZIF-8 for Catalytic Reduction of 4-Nitrophenol”, ACS Applied Nano Materials, 5, 11 (2022).
  2. “Nanoarchitectonics of Nanocellulose Filament Electrodes by Femtosecond Pulse Laser Deposition of ZnO and In Situ Conjugation of Conductive Polymers”, ACS Appl. Mater. Interfaces, 17, 22532−22546 (2024).
  3. “Protector-free, non-plasmonic silver quantum clusters by femtosecond pulse laser irradiation: in situ binding on nanocellulose filaments for improved catalytic activity and cycling performance”, Nanoscale Horiz., 9, 1155 (2024).
  4. “CO2-to-Methanol Photo-Hydrogenation on CuO/ZnO cluster catalyst/metal organic framework composites in chitosan film”, Chemical Engineering Journal, Volume 506, 15, 160037 (2025).
  5. “Photocatalytic conversion of gaseous carbon dioxide to methanol on CuO/ZnO-embedded carbohydrate polymer films”, Applied Surface Science, Volume 604, 154515 (2022).
  6. “Electrochemical nonenzymatic glucose sensors catalyzed by Au nanoclusters on metallic nanotube arrays and polypyrrole nanowires”,Journal of Colloid and Interface Science, Volume 657, Pages 567-579 (2024).
  7. “Synergistic enhancement by perovskite quantum dot on CO2-to-methanol photoconversion by cluster catalyst composites on polyimide film”,Journal of Industrial and Engineering Chemistry, (2025).
  8. “Effect of a three-dimensional nanotube array substrate on photocatalytic conversion performance of CO2 gas to methanol by amine-loaded CuO/ZnO catalysts”, Journal of Colloid and Interface Science, Volume 674, Pages 118-127 (2024)
  9. “Watt-level ultrafast 1.75 μm laser system based on thulium-doped core and terbium-doped cladding fluoride fibers”,arXiv:2511.03991 (2025)
  10. “Femtosecond pulse amplification at 1770 nm using thulium- and terbium-doped fluoride fibers”, Optics Continuum, Volume 3, Issue 8, pp.1540-1547(2024)

Price and Shipment

Product Name: Mode Locked Er Fiber Laser Kit
Product Number: LAK-Er-ML01
Price: US$ 4,600 (tax-excluded
Shipment: one week after receipt of order at shortest
two months after receipt of order at longest

*Power source for a semiconductor laser is not included.
*Optical breadboard is not included.

Options(Sold separately)

Mode-locked Er fiber laser kit Options

Please visit the Options page for the Mode-locked Er fiber laser kit.
::Mode-locked Er fiber laser kit Optionspage

  • LD uses the same thing.

Second harmonic SHG generation kit for femtosecond Er fiber laser

Please see the page, Second harmonic SHG generation kit for femtosecond Er fiber laser.
::Second harmonic SHG generation kit for femtosecond Er fiber laser page

  • It can emit a femtosecond laser with a wavelength of 780 nm.

Er-doped silica glass optical fiber

Er fiber absorption cross section and stimulated emission cross section.

::Er-doped silica glass optical fiber detail

Erファイバースペクトル