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Spectral shaping of a broadband multimode diode laser using a virtually imaged phased array

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Author(s):
Torres, Manuel Alejandro Lefran ; Fernandez, David Rodriguez ; Marquez, Jaime Javier Borges ; De Miranda, Marcio Heraclyto Goncalves ; Bouloufa-Maafa, Nadia ; Marcassa, Luis Gustavo
Total Authors: 6
Document type: Journal article
Source: OPTICS CONTINUUM; v. 4, n. 5, p. 12-pg., 2025-05-15.
Abstract

We have built a spectral shaping system, based on a virtually imaged phased array (VIPA) and a digital micromirror device (DMD), to manipulate a multimode diode laser spectrum. Due to its working principles, the system reduces the available optical power by similar to -27 dB. To overcome this limitation, we have seeded its output, using a double-pass configuration, in a tapered amplifier, to increase the available power to similar to 60 mW. We have implemented spectral features with a resolution of 0.1 cm-1, which is limited by the characterization spectrometer. This may be attractive for a wide range of applications, especially for cooling the translational, vibrational, and rotational degrees of freedom of a diatomic molecule. (AU)

FAPESP's process: 18/06835-0 - Magneto optical trap of Rb2 molecules and colissional studies
Grantee:Manuel Alejandro Lefrán Torres
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 22/16904-5 - Production and manipulation of cold molecules
Grantee:David Rodríguez Fernández
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 21/04107-0 - Collisions in a Cold Trapped Molecular Sample in a well-defined quantum state: COCOTRAMOS
Grantee:Luis Gustavo Marcassa
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 23/06732-5 - Broadband laser spectral control for pumping cold molecules
Grantee:Jaime Javier Borges Marquez
Support Opportunities: Scholarships in Brazil - Master
FAPESP's process: 19/10971-0 - Optical cavities for trapping of atoms and molecules
Grantee:Luis Gustavo Marcassa
Support Opportunities: Regular Research Grants