25-01743 Detailed Specs.pdf
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- Attached to
- NIST - Calcium Quadrupole Laser
- Solicitation number
- NB688000-25-01743_Calcium_Quadrupole_Laser
About this file
This document is a detailed specification sheet for a calcium quadrupole laser requisition from the Ion Storage Group. The specifications outline a comprehensive set of technical requirements for a continuous wave (CW), tunable laser with a wavelength of 729.3 nm (+/- 0.1 nm), demanding high-performance characteristics including an instantaneous linewidth < 10 kHz, mode-hop free tuning range > 5 GHz, and power output > 350 mW. Key technical requirements include a laser diode with >60 dB isolator, linear polarization, monitor photodiodes, Gaussian laser output with >50% fiber coupling efficiency, mechanically robust housing with frequency stability < 100 MHz/K, low-noise driving electronics, fast modulation capabilities, in-house laser diode replacement, and advanced locking electronics with Pound-Drever-Hall actuation module.
The specifications are highly technical and precise, targeting a sophisticated laser system for scientific research, with emphasis on stability, precision, and performance across multiple operational parameters. The document specifies requirements for laser driving electronics, temperature and pressure compensation, phase locking capabilities with >1 MHz bandwidth, and a complex PID regulator with multiple integration and differentiation stages. The comprehensive nature of the specifications suggests this is a critical component for specialized scientific instrumentation, likely for quantum or atomic physics research at the National Institute of Standards and Technology (NIST).
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Other files
| File | Type | Posted |
|---|---|---|
| RFQ Unrestricted LPTA Calcium Laser Final.pdf | ||
| 25-01743 Reqs and Specs.pdf |
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Detailed specifications for the Ion Storage Group calcium quadrupole laser requisition
1. Laser needs to be CW, tunable, and include the wavelength range 729.3 nm +/- 0.1 nm with an instantaneous linewidth < 10 kHz and a mode-hop free tuning range > 5 GHz throughout this wavelength range.
2. Laser diode and >60 dB isolator included, linear polarization of 1:100.
3. Amplifier after the laser head to achieve a power output > 350 mW. If amplifier is a standalone system, fiber coupling is required between laser head and amplifier.
4. Monitor photodiodes for seed laser power and amplifier output power.
5. Gaussian laser output that allows fiber coupling efficiences > 50% without external user-added ellipticity-shaping optics.
6. Mechanically robust and stable housing to improve acoustic, temperature, and alignment stability. Frequency stability < 100 MHz/K, minimal pointing drift when tuning the laser. Rigid mounting to an optical breadboard possible.
7. Laser driving electronics with low noise and drift and high resolution that control the laser temperature, current, EOM, and PZT. Temperature stabilization and pressure compensation included. Driving electronics should be rack-mountable.
8. Fast modulation possible for laser phase locking with a feedback bandwidth > 1 MHz;
demonstrated laser locking at this bandwidth with a robust lock that holds over multiple days.
9. Replacement of laser diode can happen in-house.
10. Low-noise locking electronics to phase lock the 729 laser to a reference laser with > 1 MHz bandwidth. Locking electronics need to include a PID regulator with multiple I and D stages, and contain separate outputs for fast actuation and drift compensation.
11. Module for Pound-Drever-Hall actuation that includes modulation and demodulation of a EOM in the MHz frequency range with adjustable phase.
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