First you need to stop your server and create a copy of both mdf and ldf files. If you had luck your data is still there and you can recover it with ApexSQL Recover
] or some other tool made for data recovery .
Reason why this is possible is that drop table doesn’t delete data immediately but only reallocates this spaces and markes it as free so other tables can use it. Therefore you need to act fast before it’s overwritten (that’s why you need to create copies of MDF and LDF)