SATPC0041767 Tab 07 2 SOW_Redacted.pdf

STATEMENT OF WORK FOR

DLC CTL 1050 in NASA Ames COSMIC lab

Note: Only use the sections that are applicable to your service procurement.

Background/ Scope A dual comb laser will be added to the Cosmic Simulation chamber at NASA Ames to provide high accuracy absorption data for key exoplanetary molecules in the 1-2 um region.

Spectroscopic data including absolute line positions and pressure broadening coefficients at high temperatures with different broadening gases will be measured to improve atmospheric modeling of exoplanetary atmospheres to help interpret current (JWST) and future HWO observations.

Requirements and Specifications:

SmartComb Key Specifications:

Comb Mode Spacing: 250 MHz Center Wavelength: 1560 nm Average Power: >10 mW Stability (Out-of-loop comb-comb comparison) -o RF Reference Lock - <5x10^-15 in 1000 secs o Optical Reference Lock - <5x10^-18 in 1000 secs

Accuracy (Out-of-loop comb-comb comparison) -o RF Reference Lock - <1x10^-14 T>100 secs o Optical Reference Lock - <1x10^-17 T>100 secs

Tuning Range of Comb Mode Spacing - >4MHz

M-NIR Extension Key Specifications:

Spectral range: 1050 nm - 2100 nm Free-space output port power: >200 mW

Menlo Systems Unique Selling Points:

1. More than 400 frequency comb systems in the field

a. Unrivaled experience in frequency combs.

b. User friendly and reliable combs for 24/7 operation.

c. Capability proven in world leading laboratories.

d. Installation and user training included for every delivered system.

2. Comb Performance and Qualification

a. Unrivaled performance regarding phase noise, accuracy and stability.

b. Every system is qualified against our in house state of the art comb reference system.

The measurement data is included in the delivered test report.

c. Direct, out of loop comb-comb-comparison proves by measurement that the outstanding spectral purity of the oscillator is transferred perfectly to the desired wavelength within 500-2020 nm.

3. Full control over repetition rate and carrier envelope offset frequency

a. Enables the user to control the absolute position of the comb lines and their spacing independently. Needed, e.g.

i. To match different comb modes exactly to different reference cavities.

ii. To freely adjust comb modes to produce beat signals with different CW lasers within a suitable frequency-range. CW lasers too close to a comb mode, or right in the middle of 2 comb modes, cannot be stabilized to a local reference oscillator which operates in the 10th of MHz domain. The absolute CW laser frequencies are often defined by the application (atomic transitions etc.). The comb has to be adapted to the given CW frequency set.

4. Ultra-Low-Noise figure 9 oscillator technology

a. Robust and reliable

b. Turnkey: mode-locked within seconds

c. No degrading parts

d. Fast intra-cavity actuators for lowest phase noise (Bandwidth > 1 MHz)

e. Spectral purity transfer: only fig-9 ULN technology can provide sub-

Hz linewidth of all comb lines over the entire comb spectrum, including comb extensions from 500-2020 nm.

f. Proprietary of Menlo Systems

(US8873601B2, EP2637265A1, US9705279B2, EP3041093B1)

5. 250 MHz repetition rate

a. Comb lines are easier to filter with an optical grating, wavemeter or in the RF domain

b. More power per comb line leads to higher SNR Beat signals (Compared to e.g. 80 MHz with same average power)

c. Ideal to produce ultra-low-noise microwaves in the GHz range since 250 MHz = ¼ GHz

d. The unambiguity range for dual comb spectroscopy scales with the square of the repetition rate. A high repetition rate is therefore preferable.

6. Widely tunable repetition rate

a. Enables the user to determine the absolute comb mode number

b. Ideal for spectroscopy and dual comb applications e.g.

c. Ideal for Quantum laser systems in which a large set of different CW lasers is locked to the comb.

d. Repetition rate can be tuned from 248-252 MHz

7. f-2f interferometer

a. Robust and maintenance free

b. CEO lock is stable over months

c. Fully fiber coupled f-2f interferometer delivers high SNR beatsignal (>

35 dB) in the RF domain at the carrier envelope offset frequency

d. Proprietary of Menlo Systems till 10.03.2020

(WO2000055948A1, US6785303B1, EP1161782B1, DE19911103,

JP4668423)

8. Beat detection units

a. Fully fiber coupled, easy to use

b. Compact, robust, no moving parts

c. Delivering highest SNR beat signals between comb and CW laser light.

d. Fully fiber coupled and broadband free space options available

e. Proprietary of Menlo Systems (US8995796B2, DE102011122232A1, EP2608327A1)

Delivery needed by: As soon as possible.

NASA POC:

NASA Ames Research Center