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Document And Entity Information
 12 Months Ended
Jun. 30, 2025
Document Information Line Items  
Entity Central Index Key 0001828805
Document Type POS AM
Entity Registrant Name AELUMA, INC.
Entity Incorporation, State or Country Code DE
Entity Filer Category Non-accelerated Filer
Entity Small Business true
Entity Emerging Growth Company true
Entity Ex Transition Period false
Amendment Description This Post-Effective Amendment No. 4 (this “Post-Effective Amendment No. 4”) to the Registration Statement on Form S-1 (File No. 333-259179), initially filed on August 30, 2021, as amended and declared effective on January 3, 2023 (collectively, the “Registration Statement”), is being filed to include information from the Company’s Annual Report on Form 10-K that was filed with the Securities Exchange Commission on September 9, 2025.No additional securities are being registered under this Post-Effective Amendment No. 4. All applicable registration fees were previously paid.
Amendment Flag true